Aluterus scriptus is a medium size fish which can grow up to 110 cm (3.6 ft) in length.[3] The body shape looks like an elongated oval, strongly compressed. Its background body coloration is olive-brown or grey depending on its surrounding environment, irregular blue lines and spots are distributed on the body mixed with some black spots mainly on the head. The colors may quickly vary depending on background similar to an octopus's. Fish observed in the Virgin Islands might lie flat on the sand

Scrawled filefish Scrawled filefish or Painted aluter, Painted unicorn, Tropical osbeckia is a marine fish of the unicorn family, the largest representative of this family. It reaches a length of up to 110 cm. The body is flat like plywood, so the maximum weight is up to 2.5 kg. Each scale of this fish has a spike tooth, which is why it was called a rasp fish. The rasp fish has a horn on its back, which performs the function of a retainer. With the help of this outgrowth, which also has notches,