Fish welfare – extras din “Where the fish are” (Daniel Bagur)

Fish Welfare
Stress can be a big problem for fish. Stress occurs when fish are exposed to environmental
changes or circumstances such as excessive competition for food or
capture by anglers. These situations cause fish to release stress hormones, which
can severely weaken their immune systems, making them more prone to disease,
and can even prove fatal. Of course, physical injury causes stress as well, and in
many cases, it is impossible to clearly separate the harm done to a fish directly by
a physical injury from the stress that it creates. In the following discussion of fishing
practices, therefore, it may be taken as a given that any actions that minimize
physical injury will also minimize stress and so play a double role in contributing
to the fish’s survival.

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