Ryukyu ruddertail dragonet (Callionymus ikedai)

General data
- Main name: Ryukyu ruddertail dragonet
- Habitat: Saltwater
Classification
- Genus: Callionymus - Callionymus
- Family: Callionymidae - Dragonets
- Order: Callionymiformes - Dragonets
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes