TRIPLETAIL
tripletail
(noun) large food fish of warm waters worldwide having long anal and dorsal fins that with a caudal fin suggest a three-lobed tail
Source: WordNet® 3.1
Etymology
Noun
tripletail (plural tripletails)
Any fish of the genus Lobotes.
Source: Wiktionary
Tri"ple-tail`, n. (Zoöl.)
Definition: An edible fish (Lobotes Surinamensis) found in the warmer parts
of all the oceans, and common on the southern and middle coasts of
the United States. When living it is silvery gray, and becomes brown
or blackish when dead. Its dorsal and anal fins are long, and extend
back on each side of the tail. It has large silvery scales which are
used in the manufacture of fancy work. Called also, locally, black
perch, grouper, and flasher.
Source: Webster’s Unabridged Dictionary 1913 Edition