Generally speaking, benthic fishes do not live in groups and live alone in rocky coastal shallow seas. Usually swim slowly with the fins on the back and buttocks. The staple food is invertebrates such as crustaceans and shellfish, such as seaweed, seaweed and coral on the surface of coral reefs. The body surface can secrete venom. Because of its angular body, the swimming posture of box bream is very interesting. Only the fins, mouth and eyes can move, and the body is covered with hard scales, so the box bream slowly swings up and down, back and forth, left and right, much like a helicopter swimming. Besides, its body can't expand or bend like other squid. Because the gill cover can't move, it can only open its mouth at any time to let the water flow into the gills and prey on small animals attached to rocks with its protruding mouth.