Ereunias is a monotypic genus of marine ray-finned fish belonging to the family Rhamphocottidae, the grunt sculpins.

[1] This species was first formally described in 1901 by the American ichthyologists David Starr Jordan and John Otterbein Snyder from Misaki, Sagami in Japan.

[2][3] The genus name is derived from ereunao, meaning "to explore" which may refer how it uses elongated pectoral-fin rays as feelers or "feet" to explore the substrate; suffixed with ias which is used in some Greek names for fishes.

The specific name grallator is "stiltwalker" in Latin and is an allusion to the elongated pectoral fin rays.

[4] Along with the genus Marukawichthys this taxon was classified in the family Ereunidae but this was synonymised with the Rhamphocottidae in 2014.