A newly discovered golden cave fish in southwestern China is giving scientists an unprecedented look at evolution in action.

This clip could be used as an introduction to fish. Pupils could be asked to list the characteristics of fish and compare them with characteristics of other animal groups. This clip is relevant ...

For this, scientists use something called an "outgroup", a living descendant that still shares many of the ancestor's primitive traits. So we need a living jawless fish, like a lamprey.

Challenge your logical reasoning and intelligence with this tricky brain puzzle. Can you solve it in 5 seconds? Only high IQ ...

The Xingren golden-lined fish lives only in caves near Xingren City, China, and the species is seemingly in the middle of ...

Betta fish—also known as Siamese fighting fish ... and tendency to fight. These characteristics are much more pronounced in captive betta, which have been bred for those traits since the ...

After 12 days of training, roughly 20 fish were reliably following Soller on training swims and she could recognize several of them from physical traits. By identifying individual fish ...