Different beak and jaw shapes are illustrative examples of how animal species have adapted to different food sources. In a ...

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 ...

Nature always finds a way, but those ways aren’t necessarily pretty. In fact, in regions with plenty of resource competition, ...

The biological family Cichlidaea is one of the most fascinating examples of animal evolution on Earth. Convict cichlids are a widespread, well-known species within this unique group. Convict cichlids ...

A new study that looked at gut length variation between cichlid fish species found that some of the genetic loci for the trait are sex-specific even though males and females of the same species have ...

The cichlids of Lake Tanganyika in Africa are highly diverse -- including with regard to sex chromosomes. These have changed extremely frequently in the course of the evolution of these fish and, ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have uncovered evidence of fish mating with species different from their own—a process that can lead to the ...

The cichlid fishes of Lake Malawi are famously diverse. However, phylogenetic and population genetic studies of their history have been difficult because of the great amount of genetic variation that ...