E`the*os"to*moid (?), a. [NL.
etheostoma name of a genus + -oid.] (Zoöl.)
Pertaining to, or like, the genus Etheostoma. --
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.