White-banded triplefin
Enneapterygius etheostoma
- Least concern
- Card rarity: Common
- Fish

Enneapterygius etheostomus is a species of triplefin blenny in the genus Enneapterygius. It is a temperate blenny known to inhabit rocky shores in the northwestern Pacific Ocean, and swims at a depth range of 0–21 metres It has been described from Japan, China, Korea, Hong Kong, Taiwan, and Vietnam. Male E. etheostomus can reach a maximum length of 5.5 centimetres (2.1in) Both juveniles and adults of the species are known to feed on benthic algae.
Classification
- Class
- Actinopterygii
- Order
- Blenniiformes
- Family
- Tripterygiidae
- Genus
- Enneapterygius