In the Disney film Finding Nemo, the clownfish Marlin worries that his son Nemo may have suffered an injury, and asks him to count how many stripes he has. Nemo gets the answer right — three. But in ...

It had already been known that a closely related clownfish species, Amphiprion ocellaris, develops its white bars during the metamorphosis process, when thyroid hormones are responsible for a variety ...