Fish can change their teeth quickly, which speeds up their evolution. Cichlids in African lakes show the fastest ...

Many fish enthusiasts love Black Kuhli Loaches for a variety of reasons. They’re a relatively hardy and peaceful species, so ...

A star from dozens of lightyears away was to blame for what would soon happen. Cosmic rays from a nearby supernova would soon ...

Unlike many other large lakes, its waters never fully mix, creating distinct layers that support its marine life.

The giant gourami, native to Southeast Asia, is another fish species that employs mouthbrooding to safeguard its young. In ...

African Cichlidae, also known as cichlids, the most diverse and textbook example of species diversification to fill different niches (a phenomenon known as adaptive radiation), were dominated by ...

Billie’s not keen on having a gecko in the house—even less so after we discover two in different rooms the next day—but ...

Cosmic rays from a nearby supernova would soon rain down on the unsuspecting cichlids, tearing apart their DNA, causing the fish to mutate and opening the door for myriad viruses to infect their ...

Fish, including cichlids, have either "simple" teeth, basically cone-shaped pegs, or "complex" teeth with multiple cusps that can adapt to feed on different prey. Peoples spent two years examining ...

Experienced aquarium owners know they should research different fish species before putting them in their tanks. Some fish ...