Smooth Trunkfish

The smooth trunkfish has an angular body sheathed in plate-like scales, growing to a maximum length of 47 cm (19 in), though 20 cm (8 in) is a more normal size. The body is enclosed in a bony carapace and, when viewed from the front, is triangular in shape with a narrow top and wide base. The fish has a pointed snout with protuberant lips encircling a small mouth. The tail is shaped like a brush. The general background colour is dark with a pattern of small white spots, often in hexagonal groups giving a honeycomb-like appearance in the middle area of the body. The tip of the snout and the area round the pectoral fins are dark with few spots, and the eyes are black. The fins are usually yellowish, with a dark base and tip. They have only soft rays with no spines.

The smooth trunkfish is found down to a depth of about 50 m (164 ft) on coral reefs and over sandy seabeds in the Caribbean Sea, Gulf of Mexico and the western Atlantic Ocean. The range extends from Canada and the Gulf of Maine southwards to Brazil.

In some regions, the smooth trunkfish is caught for human consumption. It is also sometimes kept in reef aquaria. Caution needs to be used, however, as it is capable of producing a toxic substance, ostracitoxin, in mucous secretions from the skin. When the fish is stressed, this is released into the water, and there have been examples of aquarium systems being poisoned by this, resulting in the loss of all other animal inhabitants.