HALFBEAK
halfbeak
(noun) tropical and subtropical marine and freshwater fishes having an elongated body and long protruding lower jaw
Source: WordNet® 3.1
Etymology
Noun
halfbeak (plural halfbeaks)
(zoology) Any slender, marine fish of the family Hemiramphidae, having the upper jaw much shorter than the lower, the balahoo or ballyhoos.
Source: Wiktionary
Half"beak`, n. (Zoöl.)
Definition: Any slender, marine fish of the genus Hemirhamphus, having the
upper jaw much shorter than the lower; -- called also balahoo.
Source: Webster’s Unabridged Dictionary 1913 Edition