aguar cichlids are not a fish you expect to pull out of a net during a routine scoop — they're large, aggressive, visually striking predators that command serious tank space and an equally serious ...

In the depths of Lake Tanganyika in Africa, one of the oldest and most diverse freshwater ecosystems on the planet, lives a ...

Emperor cichlids, large fish native to Lake Tanganyika in Africa, don't like being stared at, especially if someone's gaze is ...

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 ...