Aquaculture

Diseases are functional disruptions which can have adverse effects on the existence of all living organisms, including fish. In natural habitats such as rivers, lakes and seas, fish diseases often go unnoticed. In aquaculture systems, however, they are more easily recognized, particularly since high stock densities promote spreading of infection. Fighting these diseases is difficult because the necessary drugs are lacking or they are not authorized. This creates a state of emergency when therapy proves impossible.

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