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Amateur Fish Culture - 45 pgs 1901; Charles Edward Walker - My aim, in this little book, has been to give information and hints which will prove useful to the amateur. Some of the plans and apparatus suggested would not be suitable for fish culture on a large scale, but my
object has been to confine myself entirely to operations on a small scale. CE WALKER.

Aquaculture - Catfish Nutrition - Feeding Food Fish - 4 pgs 2006; Since feed is the most expensive part of catfish production, feeding a nutritious feed that converts efficiently and promotes growth without hurting water quality should increase production and profit. Unlike other farmed animals, fish don’t have feed available at all times and can’t feed at will. The feeder decides how much feed to offer to the fish. There are no standard feeding practices across the industry, mainly because many factors affect feeding and every pond of fish behave differently. So, feeding catfish is a highly subjective process. The information in this publication is based on results from feeding studies done over several years at the National Warmwater Aquaculture Center. Consider our recommendations as guidelines, since management practices vary from farm to farm. The guidelines are for feeding healthy fish grown from advanced fingerlings to market size.

Artificial Production of Fish - 32 pgs 1852; The object of this little book is to make known the means by which fish of all descriptions may be multiplied in rivers to an almost incalculable extent. The principle employed is not new in theory: but it is only within the last few years that any practical application of it on an extensive scale has taken place. This application has been made in France, and with success so complete and extraordinary as to be almost incredible. Our hope is, that it will be adopted on a grand scale in this country also. In Great Britain and Ireland there are rivers and streams, lakes and canals, innumerable; and they may be made to yield annually millions on millions of fish: we say millions, and say it on good authority.

Freshwater Fish Farming in Virginia- Selecting the Right Fish to Raise In Virginia and throughout the United States, interest in fish farming for profit or as a hobby has increased in the past few years. Encouraged by the success of trout farmers in western states and catfish farmers in southern states, prospective fish farmers question if similar opportunities exist in Virginia's fresh waters. The prospects for fish farming in Virginia range from very good to poor depending on the objectives (commercial or noncommercial), the economic and water resources available, and the type of fish selected for growing. In this publication we present basic information on fish farming and discuss some of the opportunities and problems involved with growing certain freshwater fish and other aquatic animals in Virginia.

Fresh Water Fish Farming: How to Begin (FAO, 1979, 43 p.) and Better Freshwater Fish Farming: the Fish (FAO, 1981, 48 p.) This manual is an adaptation of the extension booklet "Simon Raises Fish", based on a technical concept of J.W. Miller, FAO Fish Culture Extension Adviser (original graphic interpretation by Jerry Stafford, U.S. Peace Corps). It is one of a series that is finding widespread use at the intermediate level of agricultural education and training. See also: Fish Farming Pond and Fish Farming 3 and Fish
Farming 4

Fish Ponds and Fish Farming Freshwater Fish Pond Culture and Management is a how-to manual. It is designed as a working and teaching tool for extension agents. It is for their use as they establish and/or maintain local fish pond operations. The information is presented here to 1) facilitate technology transfer and 2) provide a clear guide for warm water fish pond construction and management. A valuable listing of resources at the end of this manual will give further direction to those wishing more information on various aspects of fish pond operation.

Tilapia Farming 'Tilapia' are fish species that are fresh water cichlids but some species are described as being eurhyaline. a term which means that they can tolerate and adapt to different water salinity levels including, under certain conditions, sea water. There are some 80 species of tilapia where almost all of them are of African origin although a few species come from the Israeli and Jordanian geographic regions. From all of these species, only a few tilapia species possess the characteristics required for interest in commercial fish fanning. It should be noted that the scientific classification confers to 'tilapia' several different species names, notably Sarotherodon and Oreochromis...

UNDERSTANDING FISH PRESERVATION AND PROCESSING By Richard T. Carruthers. Fish begins to spoil as soon as it is caught, perhaps even before it is taken out of the water. Therefore, the key to delivering a high quality product is close attention to small details throughout the entire process of preparation, catching, landing, handling, storage, and transport. Fish that becomes spoiled or putrid is obviously unusable. Fish that is poorly cared for may not be so obviously bad, but it loses value because of off-flavors, mushy texture, or bad color. See also: Solar Drying Fish

Fish Processing Fish Handling, Preservation and Processing in the Tropics

AquaCulture UNDERSTANDING AQUACULTURE By Ira J. Somerset. Aquaculture is the production of protein-rich foods through the controlled cultivation and harvest of aquatic plants and animals. Using inexpensive equipment and simple techniques, aquaculture can supply more protein than normally produced through conventional agriculture such as dairy, poultry, and cattle farming; and traditional fishing.

Fish Boxes This booklet describes how insulated fish boxes can be easily constructed from cheap, locally available materials. There are various methods of storing fish in containers, both at sea and on shore. However, fish are often damaged. Boxes protect the fish during transport and enable the fisherman or seller to ice the fish efficiently. This means that a good quality product arrives in the market. Fish boxes make handling easier and allow for sorting by size or species.

Fish Drying Racks Drying is one of the simplest ways to preserve fish. To get the best results it must be done quickly and cleanly. Water occurs naturally in the fish's body. When a fish is dried, water that is close to the skin or cut surface is lost first. Water that is deep in the flesh takes longer to leave. Thick fish must be split in half so that they dry quickly. Fatty, salty or partly dried fish also take longer to dry. When fish is drying, air takes up the water. If the air is damp and moving weakly it cannot carry much water, so drying is slow. Fish dry more quickly in stronger currents of air. Good quality products can be produced when there is plenty of sunlight and dry, moving air.

Small Scale Fish Processing covers the choice of fish processing technologies particularly suited for small-scale producers, namely, fish salting, drying and fermenting (Chapter II) and fish smoking and boiling (Chapter III.). Thermal processing, which may not be efficiently carried out by small-scale producers, is briefly described in Chapter IV. An economic evaluation of such processing is, however, provided in Chapter V in order to allow project evaluators and public planners to compare the economic feasibility of thermal processing and other techniques.

FISH OIL AND FISH MEAL Prepared By S. Divakaran. Fish oil is the oil from rendering whole fish or from fish cannery waste. Fish meal is the clean, dried, ground tissue of undercooked whole fish or fish cuttings. This profile describes two plants. The first is a 20-ton per day plant operating with an eight-hour shift and producing 8,000 tons of fish meal and 4,000 tons of fish oil a year. The second is a 40-ton plant operating with an eight-hour shift and producing 8,000 tons of fish oil and 16,000 tons of meal per year.

Pond Plumbing Calculator Useful calculations for garden ponds.

Management Considerations of Fish Production in Cages and (PDF 446k) - University of Florida. The production of fish in cages has been practiced for many years in various countries worldwide. Many commercial species, including bluegill, hybrid striped bass, carp, channel catfish, salmon, tilapia and trout have been cultured in cages. Specific production characteristics (such as cage design and construction material, stocking rates, feed types and rates and water quality requirements) vary greatly depending on the species and water body.

Sanitation Practices for Aquaculture Facilities and (PDF 50k) - University of Florida. Fish culture facilities should rely on a disease prevention program which includes: water quality and nutritional management, quarantine of new animals, and sanitation. Sanitation practices should include disinfection between groups of fish, cleanliness while fish are growing, and prevention of disease transmission by equipment, personnel, or water.

Caged Fish Culture - by Kenneth Williams and Glen Gebhart. THIS FACT SHEET summarizes fifteen years of experience with caged fish culture. Species have included channel catfish, rainbow trout bluegill, green sunfish, hybrid bluegill, hybrid striped bass, largemouth bass and tilapia. Channel catfish are the most common species cultured in cages, consequently this fact sheet will cover specifics of catfish culture. These principles also can be generally applied to other species. The Langston University Aquaculture Extension Program has produced several fact sheets that cover various specific aspects of caged fish culture. These include: "Cage Culture of Rainbow Trout", "Caged Catfish Culture Problems", and "Small-Scale Caged Fish Culture In Oklahoma Farm Ponds".

Caged Catfish Culture Problems - by Marley D. Beem. EVERY YEAR MANY people across Oklahoma raise catfish in cages. Most of them do fine, but when major problems happen they are usually due to one or more of the mistakes listed below. Whether you are just starting out or are an experienced caged fish farmer, read over this list of common mistakes and you might save yourself considerable time and money.

Cage Construction Technique For Plastic Coated Wire Mesh Cages - by Kenneth Williams. Cage construction will require slightly less than 20 feet of wire mesh. Use 16 gauge 2 X 1 inch mesh in rolls 48 inches wide. Wire mesh is normally sold in 100 ft. length rolls but often can be purchased in shorter lengths.

Cage Culture of Rainbow Trout - by by Marley Beem and Glen Gebhart. RAINBOW TROUT ARE cold water fish which can not survive when the water temperature rises above 70 degrees Fahrenheit for an extended period of time. Consequently, rainbow trout can only live in most Oklahoma waters from late October to early May. Rainbow trout can he grown in cages from a large fingerling size to a harvestable fish during this time period in many suitable Oklahoma farm ponds.

Tilapia Culture in Cages and Open Ponds - by Kenneth Williams. Tilapia have become one of the most widely cultured food fish in the world. Hieroglyphs found in ancient Egyptian tombs suggest that these fish were raised in ponds as long as 4000 years ago. The tilapias originated in central Africa and have been introduced throughout Asia, Europe, the middle east and the Americas. Although world wide there are many different species of tilapia , the most commonly available species in Oklahoma is Tilapia aurea, the blue tilapia.

Cage Culture in the North Central Region (PDF 2340k) - NCRAC Technical Bulletin #110 - The commercial production of fish is most commonly performed in open ponds, raceways, water reuse systems, and cages. Cage culture of fish is an intensive production method that allows the farmer to utilize existing farm ponds, borrow pits, or strip pits normally unsuitable for open pond culture, by enclosing fish in cages or pens.

What is Cage Culture (PDF 167k) - SRAC Publication No. 160 - Fish are raised commercially in one
of four culture settings: open ponds, raceways, tanks, or cages. Cage culture of fish utilizes existing water resources but encloses the fish in a cage or basket which allows water to pass freely between the fish and the pond.

Cage Culture: Site Selection and Water Quality (PDF 118k) - SRAC Publication No. 161, revised 1997 - In the U.S. the majority of cage culture is practiced in ponds or quarries. Not all ponds and quarries are suitable for cage culture of fish. Many failures in cage production have occurred because of poor site selection. Before attempting cage culture make sure the body of water chosen will support the increased biological demand placed upon it.

Cage Culture: Cage Construction, Placement, and Aeration (PDF 168k) - SRAC Publication No. 162, revised 1997 - Cages for fish culture have been constructed from a variety of materials and in practically every shape and size imaginable. Basic cage construction requires that cage materials be strong, durable, and non-toxic. The cage must retain the fish yet allow maximum circulation of water through the cage. Adequate water circulation is critical to the health of the fish, in bringing oxygen into the cage, and removing wastes from the cage. Location of the cage in the pond is critical to proper circulation through the cage. Mechanical circulation and aeration through the cage may be necessary if stocking densities are high (Figure 1), cages are large, or water quality deteriorates during production.

Cage Culture: Species Suitable for Cage Culture ( PDF 111k) - SRAC Publication No. 163, revised 1997 - Many species of fish are suitable for cage culture. Species which have been researched and successfully reared in cages in the southeastern region of the U.S. include: catfish, trout, tilapia, striped bass, red drum, bluegill sunfish, crappie, and carp. Other species may be suitable for cage culture but research has lagged behind other aquaculture research in recent years. Interest in cage culture has been revived as an alternative crop for farmers outside traditional fish farming areas and in areas with topography not conducive to levee ponds. As this interest continues to increase, more research into cage culture techniques and alternate species will no doubt occur.

Cage Culture: Handling and Feeding Caged Fish (PDF 157k) - SRAC Publication No. 164, revised 1997 - Fish stress induced by handling and poor feeding practices is a common cause of cage culture problems. Handling stress occurs whenever fish are captured, moved, or confined. Handling stress is usually associated with seining, holding, hauling, or stocking of fish. Problems associated with incorrect feeding practices are particularly acute in cages since no natural foods are usually available to the caged fish, and water quality deterioration from waste feed has a more direct effect on confined fish. Feeding problems common in cage culture include poor quality feed, incomplete feed, inadequate feeding or underfeeding, overfeeding and feeding at the wrong time of the day. Many of these problems have no simple solution and some degree of stress will occur. In most cases the management goal must simply be to reduce the total stress placed on the fish by handling and feeding practices.

Cage Culture: Cage Culture Problems (PDF 192k) - SRAC Publication No. 165 - High density aquaculture has been described by the United States Department of Agriculture as the most intensive form of agriculture practiced on a large scale in this country today. Cage culture is one of the most intense forms of aquaculture. Due to its intense nature, cage culture can have problems. Anticipation can solve at least some of them.

Cage Culture: Harvesting and Economics (PDF 34k) - SRAC Publication No. 166 - Being successful at raising fish in cages is not enough. Harvesting, keeping records, marketing, and looking at the economics of the venture are also essentials in successful cage culture. This is particularly true if the goal is to increase farm income.

Cage Culture of Tilapia (PDF 74k) - SRAC Publication No. 281 - Cage culture, the practice of rearing fish in cages, can be applied in existing bodies of water that cannot be drained or seined and would otherwise not be suitable for aquaculture. These include lakes, large reservoirs, farm ponds, rivers, cooling water discharge canals, estuaries and coastal embayments. In the southern U. S., tilapia are among the most suitable fishes for cage culture.

Analyzing the Profitability of Hybrid Striped Bass Cage Culture (PDF 45k) - Illinois-Indiana Sea Grant AS 487 - The aquaculture industry is growing in the North Central Region, including the states of Illinois and Indiana. This growth is understandable. Farmers consider an aquaculture enterprise as a productive use of otherwise idle resources or as a means to farm diversification. Both farm and nonfarm entrepreneurs believe aquaculture is an opportunity to profit from the shift in consumer preferences from red meat to chicken and seafood.

Cage Culture in Maryland - Maryland Sea Grant Extension Finfish Aquaculture Fact Sheet No. 2 (Publication No. UM-SG-MAP-88-06) - If done on a proper scale and with good planning, raising fish from cages can be treated as a separate farming enterprise. With the proper approach, small fish (6-8 inches) can be raised to an edible size (3/4 pound or larger) in cages in one growing season, or six to seven months.

The Culture of Striped Bass and its Hybrids in Cages - Maryland Sea Grant Extension Finfish Aquaculture Fact Sheet No. 3 (Publication No. UM-SG-MAP-88-07) - The aquaculture of fish can be conducted either in net-pens or in open ponds. One drawback to open-pond culture is that ponds should be designed specifically for aquaculture, and here in Maryland most ponds are not. Instead, they have been designed for watershed conservation, irrigation, livestock watering, or for such recreational purposes as fishing. These ponds usually cannot be adequately drained, or they may have structures (for example, stumps and felled trees) left in their bottoms for enhancing the habitat of largemouth bass and bluegill and other recreational fishes. Harvesting a crop of fish from the open waters of such ponds can be very difficult. Luckily, many of these ponds can still be used for aquaculture through the use of cages or net-pens.

Feasibility of Urchin Aquaculture in a Cage System (2238k) - New Hampshire/Maine Sea Grant

Fish Farmer's Guide to Understanding Water Quality and (PDF 57k) - Illinois-Indiana. Fish perform all their bodily functions in water. Because fish are totally dependent upon water to breathe, feed and grow, excrete wastes, maintain a salt balance, and reproduce, understanding the physical and chemical qualities of water is critical to successful aquaculture. To a great extent water determines the success or failure of an aquaculture operation.

Summer Fish Kills in Farm Ponds - Illinois-Indiana. Every summer a few farm pond owners experience fish kills in their ponds. While some of the fish kills can be attributed to chemical contamination, most are due to either an algae die-off or a physical process called thermal destratification or pond turnover. Both problems result in decreases in dissolved oxygen levels in farm ponds.

External Parasites in Fish - Illinois-Indiana. Summer is the season when most farm pond owners enjoy their ponds the most, either by fishing, swimming, or simply relaxing pond-side. During the peak periods of usage, anglers occasionally find parasites on the fish they catch. They are called "grubs." Grubs are the most commonly reported parasite living on fish because they are the easiest to see with the unaided eye.

Liming Aquaculture and Farm Ponds in Maryland - Maryland Sea Grant Extension Finfish Aquaculture Fact Sheet No. 7 (Publication No. UM-SG-MAP 91-02) - Farmers realize that to effectively grow crops they must periodically lime their fields to maintain the proper soil pH. If you plan on growing fish in a pond, you will probably have to do the same. Whether you use your pond for recreational fishing or for raising a commercial fish crop, having the right balance of lime is important.

Farm Pond Management: Increasing Production through Fertilization - Maryland Sea Grant Extension Finfish Aquaculture Factsheet No. 8 (Publication No. UM-SG-MAP 91-03) - This fact sheet focuses on one aspect of good management, pond fertilization; other considerations include pond renovation, elimination of existing fish populations and restocking. Information on pond renovation and population control can be obtained from the county Cooperative Extension Service offices throughout Maryland, or the Sea Grant Extension Program. Other sources of information are Maryland's Department of Natural Resources and the Soil and Water Conservation District Offices throughout the state.

Plankton Management for Fish Culture Ponds (PDF 1.8M) - NCRAC Technical Bulletin No. 114, December 1999 - The dynamic characteristics of zooplankton populations have led researchers to use particular fertilization techniques and species specific zooplankton inoculations in culture ponds (Colura and Matlock 1983; Geiger 1983a; Farquhar 1984; Turner 1984; Geiger et al. 1985). The intent of these management techniques was to maintain high densities of desirable zooplankton species in culture ponds until fish were harvested or able to consume commercial feeds.

Measuring Dissolved Oxygen Concentration in Aquaculture (PDF 607k) - SRAC Publication No. 4601 - Dissolved oxygen concentration (DO) is considered the most important water quality variable in fish culture. In the broadest sense, however, dissolved oxygen concentration is no more important than other environmental variables because any factor that is outside the range tolerated by fish can cause stress or death. What makes dissolved oxygen concentration so important in intensive fish culture is the speed with which it can change. Over a matter of hours, or sometimes even minutes, DO can change from optimum to lethal levels. No other critical environmental variable in fish culture is so
dynamic.

Pond Fertilization: Initiating an Algal Bloom (PDF) - WRAC Fact Sheet No. 104, Feb. 2000 - Algae are the population of microscopic single and multiple-celled aquatic plants that live in water. While most individual algal cells can only be viewed using an instrument such as a microscope, algal blooms give color to the pond water. When populations of algal cells multiply, thereby clouding or giving color to a pond, it is called an algal bloom. Another term used to describe algae is phytoplankton. The word phytoplankton is derived from the Greek language (phyto = plant; plankton = wanderer). It is a term used to describe plants that are so small that their movement is primarily controlled by the motion of the water. In this publication we will use the term “pond” to describe all bodies of water, including lakes.

Phytoplankton and Recreational Ponds (PDF) - WRAC Fact Sheet No. 105, May 2001 - Phytoplankton are microscopic plants that live in all healthy aquatic systems including freshwater ponds and lakes. The word phytoplankton is derived from the Greek language (phyto = plant; plankton = wanderer). It is a term used to describe plants that are so small that their movement is primarily controlled by the motion of the water. These plants called algae (alga = singular) include a number of microscopic, single and multiple cell forms.

Aquaculture Interactive - Produced by the media lab of Harbor Branch Oceanographic Institute. The ultimate desktop resource for anyone interested in learning about the emerging significance of sustainable, environmentally responsible aquaculture for our future. The CD-ROM contains 7 comprehensive units: History of Aquaculture, Water Quality, Aeration, Filtration, and Disinfection, Culture Systems, Nutrition, Aquatic Health, and Environmental Issues

The Role of Aeration in Pond Management and (PDF 48k) In most pond culture operations, aeration offers the most immediate and practical solution to water quality problems encountered at higher stocking and feeding rates. Aeration may be broadly classified into two different applications, emergency aeration and maintenance aeration.

Fertilization of Fresh Water Fish Ponds Fertilization is used in land-based agriculture to increase productivity of a field. One can also increase the productivity of a pond by adding fertilizer. If a fish species which consumes small natural foods is grown, such as the bluegill or golden shiner, then pond fertilization can increase the production of these fish. Fertilizers provide nutrients to microscopic plants known as algae. These algae are eaten by microscopic animals (zooplankton) and insects, both of which serve as food for small fish. These small fish are in turn eaten by larger predatory fish. Fertilization of a pond which has both bluegill and largemouth bass, will thus result in greater numbers of larger bass because of the increased number of bluegill for them to eat. With proper fishing, the pond will also produce greater numbers of larger bluegill. Fertilized ponds can have fish yields three to four times over that of unfertilized ponds.

Sanitation Practices for Aquaculture Facilities and (PDF 50k) Fish culture facilities should rely on a disease prevention program which includes: water quality and nutritional management, quarantine of new animals, and sanitation. Sanitation practices should include disinfection between groups of fish, cleanliness while fish are growing, and prevention of disease transmission by equipment, personnel, or water.

Fish Fingerlings: Purchasing, Transporting and Stocking and (PDF 38k) Finding a source of fish fingerlings (young fish) is the first step towards successful fish production. Following that, transporting the fish, and proper stocking procedures are necessary. Some of the most important considerations relating to fingerling purchasing, transporting, and stocking are reviewed.

The Use of Lime in Fish Ponds and (PDF 469k) Liming is a common practice in the southeastern United States. There are three main purposes for liming ponds: 1) to increase the availability of nutrients, 2) to increase pH and to buffer against daily pH fluctuations. and 3) to sterilize ponds prior to stocking. While these practices use lime, they involve different compounds.

Use of Copper in Aquaculture and Farm Ponds and (PDF 42k) Copper has been used for many years as a chemical tool in freshwater farm ponds and aquaculture operations. It is both an effective algicide and a parasite treatment. The problem with the use of copper is that there is a thin line that separates effective treatment levels from overdoses, which can kill fish. This fact sheet is designed to explain when copper is used, how it is used, and some precautions to take before using it.

The Use of Potassium Permanganate in Fish Ponds and (PDF 49k) Potassium permanganate, KMnO ₄ , is a chemical oxidizing agent that will react with any organic matter in a pond including algae, bacteria, fish, particulate and dissolved organic, and organic bottom sediments. It has been used in fish ponds to treat common fish pathogens such as gill parasites and external bacterial and fungal infections. Contrary to some reports, potassium permanganate does not add significant amounts of oxygen to water and can actually decrease dissolved oxygen concentrations by killing algae that produce much of the oxygen in ponds.

Backyard Habitat Ponds and (PDF 58k) All wildlife need water, and if you provide a source of water, they will drink it. In addition, there are numerous aquatic and amphibious species that cannot stay around your house unless you provide them with a permanent water source. A backyard pond is a good source of water, in fact, a pond is an essential portion of a well planned backyard wildlife habitat. Fortunately, ponds are fairly easy to construct; among the many styles and construction techniques, there is certainly one suited to your particular situation.

Aquatic Plant Management (PDF 219k) - Carole Lembi, Purdue University - Aquatic plants are natural and important components of the aquatic environment. Microscopic plants (algae) form the base of the aquatic food chain. Larger algae and plants provide habitat and shelter for fish, waterfowl, and other wildlife; and all plants produce oxygen as they photosynthesize during the daylight hours. Because of these benefits, some aquatic plant growth in a body of water is desirable. However, excessive growths of aquatic plants can have detrimental effects on a body of water, its inhabitants, and its users.

Fish Attractors - Mississippi State University. The primary purpose for most farm ponds in Mississippi is recreational fishing. With proper management, even small ponds can provide excellent fishing and recreational experiences. One of the best ways to enhance the fishing experience is to create fish attractors at strategic locations in a pond or lake with a well-managed fish population.

Economics of Aeration - by Dr. Carol Engle, University of Arkansas. Aeration, or the addition of dissolved oxygen to a fishpond, represents an input into the production process similar to fertilizer or other inputs. The acquisition of an aeration device by a fish farmer represents a capital investment for which an annual charge (fixed cost) must be calculated and operating expenses (variable cost) incurred. Fixed costs (depreciation, for example) are often omitted from cost comparisons. Yet capital goods, such as aeration devices, entail significant fixed cost.

Fish and Agricultural Chemicals: Safeguarding Your Pond - University of Missouri Agricultural Publication No. G1912. This publication is intended to assist you in selecting products that are least likely to have adverse effects on your fish ponds. If you are unsure of which products to use or have other questions or need on-site assistance, contact your local extension agent.

Using Grass Carp for Controlling Weeds in Alabama Ponds (PDF 1884k) - Auburn University - The grass carp, a native of Russian and Chinese rivers, was imported into the United States in 1963 for aquatic weed control and to be used as food. From the beginning, the grass carp controlled most underwater and some floating weeds in ponds. Unlike the common carp found in Alabama waters, grass carp do not stir up bottom mud to the extent of the common carp.

Pond Fertilization: Ecological Approach and Practical Applications - by Christopher F. Knud-Hansen, Pond Dynamics/Aquaculture Collaborative Research Support Program, Oregon State University. Each pond is unique and will respond differently to identical fertilizations. By understanding basic principles of pond ecology and the limited number of identifiable variables which impact fertilization responses, the farmer can make intelligent decisions on a pond-by-pond basis as to what fertilizer(s) to use, the frequency and rate of application, when not to fertilize, how to most efficiently utilize available natural resources, and how to maximize fish yields while minimizing expenses and environmental degradation. Empowering aquaculture extension workers and fish farmers with this knowledge is the overriding objective of this book.

Species Selection for Recreational Fishing in Small Ponds and Lakes (PDF) - University of California - Most landowners with adequate space, proper soil, and good quality water sources develop interests in creating aquatic environments, or improving existing ponds or lakes for recreational activities. These interests have created inquires for information concerning pond construction, suitable species for stocking, and pond management practices. This publication will address the selection of fish species as it relates to physical resources and the size of the impoundment. Emphasis will be placed on smaller water impoundments: i.e., small ponds (¼ to < 5 surface acres) to small lakes (5 to 10 surface acres).

Fish Stocking Strategies for Largemouth Bass in Recreational Ponds and Lakes (PDF) - University of California - Stocking a new pond with fish, or restocking an older pond, requires some knowledge of suitable species for the environment and the number of fish to be stocked to establish a good fishing environment. Species selection depends on factors including water temperature and size of the impoundment. One of the first steps in determining what species of fish will do well in water impoundments is to evaluate the seasonal water temperature profile of the system and then match this information with the biological requirements of the available fish. Information on how to select fish species for ponds and lakes may be found in Species Selection for Recreational Fishing in Small Ponds and Lakes.

Urban Aquaculture for the 21st Century - Using Recirculating Systems (PDF 135k) - National Sea Grant

Recirculating Aquaculture Tank Production Systems: An Overview of Critical Considerations (PDF 143k) - SRAC Publication No. 451 - Traditional aquaculture production in ponds requires large quantities of water. Approximately 1 million gallons of water per acre are required to fill a pond and an equivalent volume is required to compensate for evaporation and seepage during the year.

Recirculating Aquaculture Tank Production Systems: Management of Recirculating Systems (PDF 116k) - SRAC Publication No. 452 - Recirculating systems for holding and growing fish have been used by fisheries researchers for more than three decades. Attempts to advance these systems to commercial scale food fish production have increased dramatically in the last decade. The renewed interest in recirculating systems is due to their perceived advantages, including: greatly reduced land and water requirements; a high degree of environmental control allowing year-round growth at optimum rates; and the feasibility of locating in close proximity to prime markets.

Recirculating Aquaculture Tank Production Systems: A Review of Component Options (PDF 388k) - SRAC Publication No. 453, revised 1999 - There is a great deal of interest in recirculating aquaculture production systems both in the United States and worldwide. Most fish grown in ponds, floating net pens, or raceways can be reared in commercial scale recirculating systems, but the economic feasibility of doing so is not certain. Recirculating systems are generally expensive to build, which increases production cost.

Recirculating Aquaculture Tank Production Systems: Integrating Fish and Plant Culture (PDF 7271k) - SRAC Publication No. 454 - Recirculating aquaculture systems are designed to raise large quantities of fish in relatively small volumes of water by treating the water to remove toxic waste products and then reusing it. In the process of reusing the water many times, non-toxic nutrients and organic matter accumulate. These metabolic by- products need not be wasted if they are channeled into secondary crops that have economic value or in some way benefit the primary production system. Systems that grow additional crops by utilizing by-products from the production of the primary species are referred to as integrated systems.

Pond Recirculating Production Systems (PDF 226k) - SRAC Publication No. 455 - Water conservation and reuse has become a major issue in aquaculture in recent years. Concern over increased demand on aquifers, costs of operating wells, environmental impact of aquaculture effluent, and the desire to increase production efficiency continues to drive advances in technology and management practices. Several of the management strategies developed to address these issues include enhancing water circulation in ponds and developing intensive, recirculating tank systems. The combination of these two technologies is referred to as pond recirculating systems.

The Economics of Recirculating Tank Systems: A Spreadsheet for Individual Analysis (PDF 116k) - SRAC Publication No. 456 - A well-designed recirculating aquaculture system offers a number of advantages over pond systems. Designed to conserve both land and water resources, recirculating systems can be located in areas not conducive to open pond culture. Operators have a greater degree of control of the fish culture environment and can grow fish year-round under optimal conditions.

Culture of Small Zooplankters for the Feeding of Larval Fish (PDF 129k)- SRAC Publication No. 701 - In nature, zooplankton is one of the primary foods of larval fish. Two of the dominant zooplankton groups are Rotifera (rotifers) and a sub-class of the Crustacea, Copepoda (copepods). These two groups are the preferred prey for shrimp and fish and are the live feeds used most often by culturists. The intensive larval culture of most marine fish depends on a large supply of zooplankton.

Artemia Production for Marine Larval Fish Culture (PDF 126) - SRAC Publication No. 702 - The brine shrimp (Artemia) is in the phylum Arthropoda, class Crustacea. Artemia are zooplankton, like copepods and Daphnia, which are used as live food in the aquarium trade and for marine finfish and crustacean larval culture. There are more than 50 geographical strains of Artemia. Many commercial harvesters and distributors sell brands of various qualities.

Measuring Dissolved Oxygen Concentration in Aquaculture (PDF 607k) - SRAC Publication No. 4601 - Dissolved oxygen concentration (DO) is considered the most important water quality variable in fish culture. In the broadest sense, however, dissolved oxygen concentration is no more important than other environmental variables because any factor that is outside the range tolerated by fish can cause stress or death.

Workshop on Commercial Aquaculture Using Water Recirculating Systems - 1991, sponsored by NCRAC, Illinois State University, Illinois-Indiana Sea Grant Program - There are some excellent resources here for you. Use them to their fullest so that you can increase your knowledge of recirculating systems.

Potential for Recirculating Aquaculture Systems in the Midwest - Paper presented at the 1999 North Central Regional Aquaculture Conference - With the current national hog crisis, interest in farm diversification has increased dramatically. Aquaculture provides existing and prospective farmers an economically viable and environmentally sound alternative form of livestock production. Many farmers ask if it is possible to convert existing livestock buildings to facilities suitable for aquaculture production. There is no definitive answer to this question, but with adequate information and business planning a reasonable assessment of production scale RAS can be made. This paper is written to address current and potential uses of RAS in aquaculture.

Comparison of Energy Needed to Heat Greenhouses and Insulated Frame Buildings Used in Aquaculture and (PDF 21k) - University of Florida - A water recycling aquacultural production system must be housed in a building to be effective. A typical water recycling aquacultural production system consists of production tanks, a pump, a filtering system, a temperature control system, a heating system and/or cooling system, the plumbing and valves necessary to control the flow of the water, a source of water and housing for the system. Locating production inside a building offers several advantages such as stable water conditions, protection from predators, the ability to control photoperiod, security from vandalism, and better overall management.

Principles of Water Recirculation and Filtration in Aquaculture and (PDF 177k) - University of Florida - Recirculating water systems are designed to minimize or reduce dependence on water exchange and flushing in fish culture units. These systems have practical applications in commercial aquaculture hatcheries, holding tanks, and aquaria systems, as well as small scale aquaculture projects. Water is typically recirculated when there is a specific need to minimize water replacement, to maintain water quality conditions which differ from the supply water, or to compensate for an insufficient water supply.

Sanitation Practices for Aquaculture Facilities and (PDF 50k) - University of Florida - Fish culture facilities should rely on a disease prevention program which includes: water quality and nutritional management, quarantine of new animals, and sanitation. Sanitation practices should include disinfection between groups of fish, cleanliness while fish are growing, and prevention of disease transmission by equipment, personnel, or water.

Evaluation of Recirculating Aquaculture Systems - University of Minnesota & Minnesota Department of Agriculture, October 1997 - This is a report on a joint project between the Minnesota Department of Agriculture and the University of Minnesota in an attempt to evaluate the technical feasibility and economic viability of using recirculating aquaculture technology for commercial fish farming in the northern climate.

Microcontrollers in Recirculating Aquaculture Systems (PDF 114k) - University of Florida, April 1994 -

Fish Farming in Recirculating Aquaculture Systems (RAS) - by Louis A. Helfrich and George Libey, Virginia Tech - AQUACULTURE (farming of fish under controlled conditions) is a growth industry striving to satisfy a growing market for food fish. It currently is one of the fastest growing sectors of agriculture in the United States. Farm-reared freshfish is increasing in popularity and profitability. Catfish, trout, striped bas, oysters, clams and other aquatic species are fast becoming the new "cash crops" of the 1990’s.

A Prototype Recirculating Aquaculture-Hydroponic System (.pdf file - Adobe Acrobat required to view) By Donald Johnson and George Wardlow. University of Arkansas, Department of Agricultural and Extension Education AgriScience Project. This web download is a 10-page reprint of an article the authors originally published in Journal of Agricultural Mechanization(November 7, 1997). It describes a low cost (less than $600) recirculating aquaculture - hydroponic system suitable for use in laboratory settings. Included is a materials list and approximate cost of materials to set up a 350-gallon aquaponic unit.

Farming the Water By Linda Weimer. This is a 4-page web article, originally appearing in the June 1994 issue of John Hopkins University magazine. It highlights the Bioshelters aquaponic greenhouse operation in Amherst, Massachussetts.

Aquaponics - Integration of Hydroponics with Aquaculture Horticulture Systems Guide. Aquaponics is a bio-integrated system that links recirculating aquaculture with hydroponic vegetable, flower, or herb production. Recent advances by researchers and growers alike have turned aquaponics into a working model of sustainable food production. This publication provides an overview of aquaponics with brief profiles of working units around the country. An extensive list of resources point the reader to print and web-based educational materials for further technical assistance.

AGRIC - BF_Farming_Snails_1 & AGRIC - BF_Farming_Snails_2

Rice Fish Farming This symposium on rice-fish farming in China brought together 55 experts and scholars from the Academia Sinica, the Departments of Agriculture and Hydraulics, the Institutes of Aquacultural Research and Education, and the Administration Bureaus. China has had a long history of rice-fish farming. As rural areas have been industrialized in recent years, rice-fish farming has gained attention because it is an organic method that combines rice and fish production while maximizing labour and ricefield resources. Research was focused on the common needs of fish and rice for water, light, and nutrition under local conditions. Many new techniques were developed to suit various locations: ridge and ditch systems; semidry land; ditch manure pits; ditches with floating water; and rice-duckweed-fish systems. These new methods enriched and further developed the theory of rice-fish integration.

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