Tetraonchoididae

Tetraonchoididae is a family of flatworms belonging to the order Gyrodactylidea.

Genera:
 * Allotetraonchoides Dillon & Hargis, 1968
 * Heteropavlovskioides Machida, 1978
 * Neopavlovskioides Dillon & Hargis, 1968
 * Paratetraonchoides Bychowsky, Gussev & Nagibina, 1965
 * Pavlovskioides Bychowsky, Gussev & Nagibina, 1965
 * Pseudotetraonchoides Bychowsky, Gussev & Nagibina, 1965
 * Tetraonchoides Bychowsky, 1951