Size: 44 × 14 × 20 cm
The anglerfish is a fish of the teleost order Lophiiformes (/ˌlɒfiɪˈfɔːrmiːz/). It is a bony fish named for its characteristic mode of predation, in which a fleshy growth from the fish's head (the esca or illicium) acts as a lure towards other fish.
Some anglerfish are also notable for extreme sexual dimorphism and sexual symbiosis of the small male with the much larger female, seen in the suborder Ceratioidei. In these species, males may be several orders of magnitude smaller than females.
Anglerfish occur worldwide. Some are pelagic (dwelling away from the sea floor), while others are benthic (dwelling close to the sea floor); some live in the deep sea (e.g., Ceratiidae), while others on the continental shelf (e.g., the frogfishes Antennariidae and the monkfish/goosefish Lophiidae). Pelagic forms are most laterally compressed, whereas the benthic forms are often extremely dorsoventrally compressed (depressed), often with large upward-pointing mouths. (from Wikipedia)