Fish must be provided with a suitable diet for their species, age, size, growth stage and stage of production.
Commercial diets are available from a number of feed manufacturers for marine and freshwater fish including diets for larvae, juveniles and adults. The commercial diet used should be designed for the target species, life stage and size.
Commercial fish diets should be stored for as short a time as possible before use and kept cool and dry. If the diets are to be stored for longer than one month they should be kept in cool (<15°C), dry conditions or frozen.
Silver perch are often fed fresh or frozen baitfish or aquatic plant material. This food needs to be stored frozen and care must be taken to ensure it is not contaminated and does not deteriorate.
Quantity and regularity
Fish should be fed to optimize survival and growth. Each species should be fed appropriately.
If fish are not feeding vigorously, excess feeding can adversely affect water quality. At such times feeding should be reduced or suspended until conditions improve.