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.

In certain Lake Tanganyika cichlids breeding in empty snail shells, there are two extreme sizes of males: giants and dwarfs. Researchers have analyzed the genomes of these fish and found out how the ...

In Lake Malawi, hundreds of species of cichlid fish have evolved with astonishing speed, offering scientists a rare opportunity to study how biodiversity arises.

If you're a male African cichlid, it pays to be a brawler. A new study finds that female fish get a reproduction-related charge when their preferred mate wins a fight against another male. When her ...

The evolution of new traits with novel functions has always posed a challenge to evolutionary biology. Studying the color markings of cichlid fish, Swiss scientists were now able to show what ...

Appearances can be very deceptive. Look closely at brown striped lake snails and you may spot one that is actually a fish. Even experts can be fooled. Shun Satoh of Osaka City University, Japan, found ...