Fish appear to spank their children—and it makes their kids more cooperative in their duties, new research has found. These findings imply that this fish may have more advanced and complex social ...

Fish will mate with a species outside their own if the male's colouring is attractive enough or if the female can't see him properly, according to new research. Such 'mistakes' in mate choice can lead ...

Subordinate male cichlid fish who help with the childcare for the dominant breeding pair are occasionally actually the fathers of some of the offspring they help to rear, according to new research ...