| Eastern blacknose dace | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cypriniformes |
| Family: | Cyprinidae |
| Subfamily: | Leuciscinae |
| Clade: | Pogonichthyinae |
| Genus: | Rhinichthys |
| Species: | R. atratulus
|
| Binomial name | |
| Rhinichthys atratulus | |
| Synonyms | |
| |
Eastern blacknose dace (Rhinichthys atratulus) is a species of ray-finned fish in the genus Rhinichthys. Its name originates from the Old French word "dars" which is the nominative form of the word "dart" in reference to their swimming pattern. The western blacknose dace (Rhinichthys obtusus) formerly was considered conspecific. While morphologically the two species are not significantly different, they are allopatric.[3] The eastern blacknose dace is found across the southeast portion of Canada and down along the United States' east coast. It is dark brown to olive on its dorsal surface and silvery white below, the two shades separated by the darkly pigmented lateral line. In the breeding season, males develop darker pigmentation and an orange lateral line. Blacknose dace live in rocky streams and rivers where they feed upon small invertebrates and microscopic biological matter and provide forage for larger fish.
- ^ NatureServe (2013). "Rhinichthys atratulus". IUCN Red List of Threatened Species. 2013: e.T202361A18231369. doi:10.2305/IUCN.UK.2013-1.RLTS.T202361A18231369.en. Retrieved 20 November 2021.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Rhinichthys atratulus". FishBase.
- ^ Fraser, B. A.; Mandrak, N. E.; McLaughlin, R. L. (2005). "Lack of morphological differentiation in eastern (Rhinichthys atratulus) and western (Rhinichthys obtusus) blacknose dace in Canada". Canadian Journal of Zoology. 83 (11): 1502–1509. doi:10.1139/z05-148.