Summary: While there are many species in the “angler fish” family (over 200), this species – Lophius piscatorius, is most commonly known as the “angler” fish. It is also known as the monkfish, frog fish or sea devil and has a distinctive body shape and appearance. It has a sandy brown-green, frilly, camouflaged body. It has a flat head, a wide mouth and rows of gruesome looking teeth. The maximum length of the fish is 6.5 ft (2 m) but it is mostly head, mouth and stomach. Its fins are located on the outside of its rather small limbs.