Filefish on coral reef

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@Reef Builders Filefish have two dorsal fins. The first dorsal usually has two stout spines (though a few have one) and—like their cousins the triggerfish—the pelvic fins are lacking. Instead, there is an extension of the pelvic bone, known as the pelvic rudiment, that has a “spinous” knob on its end with skin attached to it (some species lack this structure). In some filefish, this bone is moveable and has an attached skin flap that is erected when the species displays toward a rival.Learn more here: https://www.snorkeling-report.com/triggerfish-filefish-species-identification/ and here: https://www.tfhmagazine.com/articles/saltwater/those-fabulous-filefish-full
@Deep Marine Scenes