Squaretail

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.

Species
The three species are:
 * Bigeye squaretail, T. atlanticus Lowe, 1839
 * Smalleye squaretail, T. cuvieri Risso, 1810
 * Pacific squaretail, T. pacificus Abe, 1953