Emperor cichlids, large fish native to Lake Tanganyika in Africa, don't like being stared at, especially if someone's gaze is directed at their offspring. Those are the findings of a new study ...

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 ...

African cichlid fish evolved in calm, clearwater lakes saturated with sunlight, and are known for their incredible visual system, which relies on a diverse array of visual pigment proteins called ...

In social fish like cichlids, status is everything. High-status males are territorial and colorful – they defend territories and reproduce with females. Low-status males, which are less colorful and ...

After weeks of flooding, the tiny creek finally returned to normal. A fish trap was placed beside the rocks where the fish usually hide. Hours later the trap was lifted from the water. Inside were ...

Cichlid fish are seen sucking up sand and spitting it out in a pile to impress females and intimidate rivals with their 'sandcastles'. The mounds of sand, called bowers, are each subtly different in ...

Scientists have uncovered evidence of fish mating with species different from their own—a process that can lead to the creation of several new species. For a study published in the journal Nature ...

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 ...

In bony fish the swim bladder primarily serves for buoyancy. Moreover, in many species it also possesses acoustic functions: it plays a role in sound production and improves hearing in numerous ways.

A Case Western Reserve University scientist has played the lead role in identifying an invasive species related to one already threatening other fish in the waters of the southern United States. That ...