
Indeed, all clownfish are born male. However, they also carry reproductive organs. Any given group of clownfish are led by the dominant female, who is the largest, followed by the breeding male, and a clutch of other immature males.
Whenever a dominant female dies, she is subsequently replaced by a male when it changes its ***. This change, unsurprisingly, is irreversible, and it seems to have something to do with the clownfish’s habitat: the sea anemone.
(c) ranker