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 …

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 …