Selfie-takers are likely familiar with the facial expression known as the "fish gape" — a neutral face with unfocused eyes and slightly parted lips. But when gaping occurs in young fish — as they ...

These cichlids can now be used as a model system for studying widened canals, and we can apply what we learn from them to the fish in the deep sea." Webb analyzed video of the swimming behavior of the ...

The poster child for evolution may have finally revealed its secret. More than 1000 closely related but different species of cichlid fish live in Lake Malawi in south-east Africa – more than in any ...