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 ...

Juvenile cuckoo catfish just after leaving cichlid's mouth. This material relates to a paper that appeared in the 02 May 2018, issue of Science Advances, published by AAAS. The paper, by R. Bla&zcaron ...

While many creatures lay eggs or give birth to live young in familiar ways, some have developed unique methods to protect their offspring. One such strategy is mouthbrooding, where parents carry and ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American I first encountered a male jawfish with a ...

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 ...

Cichlids are one of the largest and strangest groups of vertebrate fish — fish with backbones — on Earth. They’re popular as pets and farmed in aquaculture, and scientists have been studying them ...

Cichlid fishes have undergone a mind-boggling degree of speciation. New research is revealing features of their genomes that primed them to diversify so spectacularly Africa's Lake Victoria is home to ...

This article originally appeared on Massive. Two cichlids, small silver fish brushed with yellow, romantically swoop and dive around each other. Just out of reach of the breeding pair, a duo of ...