Decemtestis kobayashii Park 1939

are endoparasites of

• World Register of Marine Species: Gastrophysus lunaris (Bloch) (adult)
• World Register of Marine Species: Cynoglossus purpureomaculatus Regan 1905 (紫斑舌鰨) (adult)
• World Register of Marine Species: Cynoglossus joyneri Günther 1878 (adult)
• World Register of Marine Species: Lutjanus johnii (Bloch 1792) (約翰笛鯛) (adult)
• World Register of Marine Species: Cynoglossus bilineatus (Lacepède 1802) (fourlined tonguesole) (adult)

geographic distribution

• World Register of Marine Species: Arabian Sea
• World Register of Marine Species: North Korean Exclusive Economic Zone
• World Register of Marine Species: Bay of Bengal

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
• World Register of Marine Species: endoparasite