‘Nemo’ clownfish drive away species with same stripes, study suggests

Researchers say they have found how anemonefish identify unwelcome guests of their own kind, by counting white markings

Unlike the star of Disney's Finding Nemo, real-life common clownfish are not keen on sharing their home with members of their own species.

Researchers say they have discovered how they kick unwelcome guests out, by counting the stranger's vertical white markings.