The trematode Aphallus tubarium (Rudolphi, 1819) Poche, 1926 is found in the new host, the pipefish, Syngnathus typhle Linnaeus (Pisces, Syngnathidae) caught near coast of the Black Sea. Morphological description and figure of trematode are given. The genus Aphallus is recorded from the Black Sea for the first time.