Several anemonefish or clownfish share one anemone, with the largest fish being a female. This is a trio of common clownfish (Amphiprion ocellaris). Dauin, Philippines. (Credit: Klaus Stiefel / CC ...

Many people tend to think of clownfish, with their distinctive white bars against an orange, red, or black background, as a friendly sort of fish, perhaps influenced to some extent by the popular ...

Nemo, the small animated fish, is an icon, snuggled up with his father in an anemone. And Pixar would have you believe that anemonefish life is generally peaceful and tranquil. But the myth belies ...