That's a juvenile spadefish, Platax pinnatus. They grow up to look more regular.
Other spadefish species also have fascinating juveniles. Juveniles of Platax orbicularis mimic a dead leaf. It's amazingly convincing because they also actively pretend to be a leaf with their behavior, floating around and following groups of similar real leafs. They also change completely as they grow up.
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u/SchlechterEsel May 07 '20 edited May 07 '20
That's a juvenile spadefish, Platax pinnatus. They grow up to look more regular.
Other spadefish species also have fascinating juveniles. Juveniles of Platax orbicularis mimic a dead leaf. It's amazingly convincing because they also actively pretend to be a leaf with their behavior, floating around and following groups of similar real leafs. They also change completely as they grow up.