What is "squaretail"

n. 1 A perciform fish of the genus (taxlink Tetragonurus genus noshow=1), found in tropical and subtropical oceans. 2 The brook trout, a fish of the species ''Salvelinus fontinalis'', found in North America.

n. sluggish square-tailed fish armored with tough bony scales; of deep warm waters

The squaretails are a genus, Tetragonurus, of perciform fishes, the only genus in the family Tetragonuridae.

They are found in tropical and subtropical oceans, and feed on jellyfish and ctenophores.