stoneroller

stone·roll·er

S0777950 (stōn′rō′lər)n. Any of several North American minnows of the genus Campostoma, having a ridge on the lower jaw used for scraping algae from rocks.
[So called because the males move small stones into a pile to build their breeding nests.]

stone•roll•er

(ˈstoʊnˌroʊ lər)

n. 1. an American minnow, Campostoma anomalum, that moves stones as it feeds. 2. any other minnow or sucker with similar habits, as Hypentelium nigricans. [1795–1805]