Except for the eyes, the low-set mouth, and the fins and tail, boxfishes are encased in the rigid car.... boxfish relat

This covering consists of fused plates, and in cross section, depending on the species of fish, it takes the shape of a rough triangle, square, or pentagon. Boxfishes are often very attractively coloured. Related to the boxfishes are the keeled boxfishes of the family Aracanidae. APA style: boxfish.