Didymocylindrus apharyngi (Job 1961) Pozdnyakov 1996

are endoparasites of

• World Register of Marine Species: Sphyraena qenie Klunzinger 1870 (巴拉库答) (adult)
• World Register of Marine Species: Sphyraena barracuda (Edwards 1771) (Great barracuda) (adult)
• World Register of Marine Species: Sphyraena jello Cuvier 1829 (尖梭) (adult)

geographic distribution

• World Register of Marine Species: Gulf of Mannar
• World Register of Marine Species: Red Sea and Gulf of Aden

trophic guild

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