Atlantic cod Gadus morhua L. in the Baltic Sea visit hypoxic water briefly but often

No abstracts are to be cited without prior reference to the author.

Prolonged exposure to hypoxia decreases growth and predatory performance of fish. Hypoxic events are observed with increasing frequencies in lakes, coastal regions and deeps of semi-enclosed seas (right). In order to understand how predatory fishes can cope with hypoxia, and if there are behavioural mechanisms to counteract hypoxia induced decrease in growth and food consumption, individual behaviour of fish in the presence of hypoxic water was measured in situ.