EN
Steganoderma retroflexum (Molin, 1858) Yamaguti, 1934 (Trematoda, Zoogonidae) was found to parasitize Belone belone euxini (Beloniformes, Belonidae) in Bulgarian Black Sea coastal waters. This report is the first record of the parasite for the Black Sea. Morphological description of the trematode is presented.