Etheostomoid - a. Pertaining to, or like, the genus Etheostoma.
Etheostomoid - n. Any fish of the genus Etheostoma and related genera,
allied to the perches; -- also called darter. The etheostomoids are
small and often bright-colored fishes inhabiting the fresh waters of
North America. About seventy species are known. See Darter.