Callionymus io is a species of ray-finned fish in the genus Callionymus.
The Callionymus io lives in the demersal, marine environment.
Callionymus io Chaetodon mesoleucos x Hapalogenys nigripinnis Ostichthys sandix Meuschenia flavolineata Gymnothorax australicola Opistognathus rosenbergii Chaetodontoplus ballinae Chaetodontoplus mesoleucus x Chromis chromis x Pontinus longispinis Centropristis striata Cosmocampus brachycephalus Carinotetraodon travancoricus Chonerhinos silus Ctenochaetus striatus More