Happy salmon swim further Some salmon are nervous nellies and apprehensive about swimming far out to sea, but not so if they can get a boost from anti-anxiety drugs.
Female fish lose interest in colourful males Norwgian researchers made a surprising discovery when they followed the mating habits of damselfish on the Great Barrier Reef.
The warming waters lure perch to extend its range northwards Due to global warming, perch, ruffe, roach and ide are found further north than before.
Sedatives turn fish into unsociable gluttons Drug residues in the waterways can have unexpected consequences for our ecosystems, say Swedish researchers after exposing perch to anti-anxiety drugs.
