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The Guardian - UK
The Guardian - UK
Environment
Nicola Davis Science correspondent

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

Fish
A common clownfish
Experiments have shown common clownfish are more aggressive towards fish models painted with patterns like their own. Photograph: Wolfgang Polzer/Alamy

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.

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