ikhthyes

a pair of large Syrian river fish who rescued Aphrodite and Eros when they were fleeing from the monster Typhoeus and were placed in the sky as the constellation Pisces. Alternatively the two gods disguised themselves as fish to escape the monster, or that the fish assisted in the birth of Aphrodite. Presumably the large river fish are Barbus esocinus, a large cyprinid of the Tigris-Euphrate basin