ἱππόκαμπος

A. monster with horse's body and fish's tail, on which the sea-gods rode, Men. 831; ἑστήκει Ποσειδῶν χάλκεος, ἔχων ἱ. ἐν τῇ χειρί Str. 8.7.2, cf. Philostr. Im. 1.8.

2. a small fish, the sea-horse, Dsc. 2.3, Ael. NA 14.20, Gal. 12.362.