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 ...

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

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

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.