Secondary School Teachers

Aquaculture as a Teaching Tool

David Cline, Extension Aquaculture Specialist, Auburn University

Aquaculture, like agriculture, is a complex subject with numerous facets for study in educational programs.

School teacher seeing a baby catfish still in the egg (photo courtesy of Auburn University)

A number of university, secondary agriculture, and science teachers have realized this and integrated aquaculture into their curricula. Aquaculture is an excellent teaching tool because it easily integrates many disciplines including biology, chemistry, economics, math, and physics. …





Gary Fornshell, Extension Educator/Aquaculture, University of Idaho

Trout Culture

The trout industry in the United States traces its roots back to the mid-1800s. America’s westward expansion created more demand on local fish populations. The development of an artificial spawning system for egg incubation and early rearing of fry …

Water Quality in Aquaculture

David Cline, Extension Aquaculturist, Alabama Cooperative Extension System, Auburn University

Water quality test kit (photo courtesy of David Cline, Auburn University)

Water quality is a critical factor when culturing any aquatic organism. Optimal water quality varies by species and must be monitored to ensure growth and survival. The quality of the water in the production systems can significantly affect the organism’s health and the costs associated with getting a product to the market. Water quality parameters that are commonly monitored …

Yellow Perch Aquaculture

Vanessa Weldon, Extension Associate, University of Arkansas at Pine Bluff

Large female yellow perch (courtesy of Cecil Baird, Baird Fish Taxidermy & Fish Farm, Ligonier, Indiana).

Yellow perch, Perca flavenscens, is a sportfish found throughout the Great Lakes region and highly valued for its high-quality, firm, white, flaky flesh (Hinshaw 2006). A commercial fishery established for yellow perch yielded as high as 37 million pounds through the 1950s and ’60s but nearly collapsed shortly thereafter (Scott and Crossman 1973). …

Prawn, Freshwater

Laura Tiu, Aquaculture Specialist, Ohio State University South Centers

Geoff Wallat holding a freshwater prawn (courtesy of Laura Tiu, Ohio State University).


Fish Disease

Andy Goodwin, Fish Pathologist/Inspector(AFS-FHS), Professor/Associate Director UAPB Aquaculture/Fisheries Center

Aquatic Animal Health and Disease

Wet mount of Trichodina from catfish skin (photo by Andy Goodwin).

When fish are living under good conditions with favorable water quality, nutritious food, and optimal temperatures, disease generally occurs only when new bacteria, viruses, or parasites are introduced into the fish’s habitat. When fish are living under less than optimal conditions, their resistance to disease is reduced, and they may be infected by common diseases …

Fish Nutrition

Dr. Rebecca Lochmann, Professor, University of Arkansas at Pine Bluff

Variety of fish feeds (courtesy of Laura Tiu, Ohio State University).

Fish need energy to maintain basic metabolic activities and to support growth, reproduction, activity, and health. Proteins, carbohydrates, and lipids (the macronutrients) provide this energy and also some essential nutrients. Micronutrients (vitamins and minerals) do not contain calories but are also required for good performance.

Fish require essential amino acids in proteins for growth, tissue repair, general health, and …

Golden Shiners

Vanessa Weldon, Extension Associate, University of Arkansas at Pine Bluff
Nathan Stone, Extension Section Leader – Aquaculture, University of Arkansas at Pine Bluff

School of golden shiners in tank (photo courtesy of Nathan Stone, University of Arkansas at Pine Bluff).

The golden shiner Notemigonus crysoleucas is the most common baitfish sold in the United States. It is also stocked as a supplemental forage fish in sportfish ponds. In 2005, the farm-gate value of golden shiners was $17.1 million, nearly half …


Carlos Martinez, Assistant in Ornamental Aquaculture Extension, University of Florida Tropical Aquaculture Laboratory

Reticulate Loach, Botia lohachata (photo courtesy of Florida Tropical Fish Farms Association and Dr. Harry Grier)

Ornamental fish production varies from extremely intensive indoor recirculating systems to extensive outdoor earthen ponds. Regardless of the culture method, all ornamental fish farmers are dependent upon producing their own fry (baby fish). The farmers who choose egg-layer species generally have much more control over their production than do those who …

Commercial Aquaculture Producers

Robert Durborow, State Extension Specialist for Aquaculture, Kentucky State
Laura Tiu, Aquaculture Specialist, Ohio State University South Centers

Feeder blowing pelleted food to a catfish pond (photo courtesy of David Cline, Auburn University)

Commercial aquaculture production is a complex business requiring many skills. Some aquaculture ventures are quite profitable, while others are currently facing serious challenges from worldwide competitors, especially from those in southeast Asia. Because of this, the eXtension website is focused on providing information to aquaculturists that can …