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SRAC# 164

Cage Culture: Handling and Feeding Caged Fish (Revised 1997)

Michael P. Masser


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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.
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