Pedunculacetabulum opisthorchis Yamaguti 1934

are endoparasites of

• World Register of Marine Species: Oplegnathus fasciatus (Temminck & Schlegel 1844) (条石鲷) (adult)
• World Register of Marine Species: Hexagrammos otakii Jordan & Starks 1895 (大泷六线鱼) (adult)
• World Register of Marine Species: Lethrinus haematopterus Temminck & Schlegel 1844 (adult)
• World Register of Marine Species: Cheilodactylus zonatus Cuvier 1830 (adult)

geographic distribution

• World Register of Marine Species: Japanese part of the North Pacific Ocean
• World Register of Marine Species: Sagami Bay
• World Register of Marine Species: Japanese part of the Inland Sea

trophic guild

• World Register of Marine Species: endoparasite
• World Register of Marine Species: endoparasite
• World Register of Marine Species: endoparasite
• World Register of Marine Species: endoparasite