Pineapplefish

It has a plump, rounded body almost completely covered in large, rough scales with sharp, backward-pointing spines. The head is large, with mucous pits bordered by rough ridges, and is armored with heavy bone. The snout is blunt and overhangs the wide mouth. The teeth are tiny and thin, present on the jaws, palatine, and vomer. There are two pits containing bioluminescent bacteria on the lower jaw near the corners of the mouth, which are concealed when the mouth is closed.