A summary of the current research topics in the field of work “fish breeding, product quality”:

• Optimising the breeding of pike-perches using dry feed
• Breeding whitefish using the pond-in-pond principle
• Developing and checking the performance of a self-cleaning inert gas denitrification reactor (SID reactor) for closed recirculation systems when keeping types of fish that react sensitively to nitrate
• Dry feed from preserved by-products for processing freshwater fish and using them for carnivorous aquaculture candidates
• Vitamin D content in commercial fish bred in Germany – studies on the effects of the environment where the fish are kept and approaches to increasing vitamin D levels