The French angelfish swims among the coral and along rocky beds between 5 and 25 m below the surface. The adults' colouring is fairly dark, whereas the young have yellow bands across their bodies that fade with age.
Often found in couples, they take ownership of a territory that they fiercely defend against their fellow angelfish. They express their aggression through threatening movements accompanied by sounds.
They thrive in shallow zones, on reefs and in sandy areas. This omnivorous species feeds on algae, sponges and coral. Its young also play the role of cleaner, ridding other fish of their parasites.
French angelfish are protogynous hermaphrodites, meaning they are born female and transform into males over the course of their lives.
To breed, the couple rises quickly to the surface to simultaneously release their reproductive cells.
The transparent, pelagic eggs hatch into larvae that rapidly settle on coral reefs once they reach 15 mm in length.
Because these are typically territorial fish, very aggressive to other members of their species, the unique markings on their young allow them to be accepted on the territory of a male who can see that they are not in competition with him. »
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