1) Aspidophoroides monopterygius 2) Fish 3) Poacher 4) Sea poacher 5) Sea poker 
The Alligatorfish (Aspidophoroides monopterygius, also known commonly as the Aleutian alligatorfish and the Atlantic alligatorfish) is a fish in the family Agonidae (poachers). It was described by Marcus Elieser Bloch in 1786. It is a marine, temperate water-dwelling fish which is known from the northwestern Atlantic Ocean, including western Green...
[n] - small very elongate sea poachers
Aspidophoroides monopterygius noun small very elongate sea poachers
a slender marine fish, Aspidophoroides monopterygius, of Atlantic seas, having overlapping plates covering the body. · any of several related fishes of the family Agonidae.