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.

Vol. 142, No. 11/12, Cooperation and Conflict over Investment Strategies in Animals (Nov. - Dec., 2005), pp. 1615-1641 (27 pages) Group size has been shown to positively influence survival of group ...

Male cichlids that are constantly threatened by predators grow faster and postpone the full expression of conspicuous breeding coloration for longer. This is shown by a study by biologists from the ...

They came to south Florida in a quiet, undetermined way, and are making a name for themselves. They are short and stocky and full of fight. When they strike, they hit hard. These hardy fish, ...

A new study shows that cichlid fish reared in larger social groups from birth display a greater and more extensive range of social interactions, which continues into the later life of the fish.