There are concerned, overprotective parents, and then there are cichlid fish. After a male cichlid fertilizes the female’s eggs, she holds her entire brood of embryos inside her mouth for two weeks ...

Researchers have found that chunks of "flipped" DNA can help fish quickly adapt to new habitats and evolve into new species, acting as evolutionary "superchargers." In the face of threats from other ...

Most fish rely primarily on their vision to find prey to feed upon, but a University of Rhode Island biologist and her colleagues have demonstrated that a group of African cichlids feeds by using its ...

What looks like an ordinary creek is actually packed with aquarium species gone wild. Bright cichlids flash through the current, turning this natural stream into a living fish tank. The sight is ...

When animals practice monogamy, we can generally tell right away. After all, couples like to hang out together, whether they’re humans or squirrels or hawks. But one fish keeps its monogamy so ...

A researcher found and recorded the Cuatro Ciénegas cichlid, a rare fish by the scientific name of Herichthys minckleyi, using a stealth mating strategy called sneaking to slip his DNA into the next ...