Western blacknose dace

Western Blacknose Dace
Fish caught in Mississauga, Ontario.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Subfamily: Leuciscinae
Clade: Pogonichthyinae
Genus: Rhinichthys
Species:
R. obtusus
Binomial name
Rhinichthys obtusus
Synonyms

Rhinichthys meleagris Agassiz, 1854

Western Blacknose Dace from Indiana.

Western blacknose dace (Rhinichthys obtusus) is a common species of ray-finned fish belonging to the family Cyprinidae (minnow or carp)[3] and the genus Rhinichthys. Western blacknose dace have tan to dark brown backs, lighter sides, and cream colored undersides.[4] Dark blotches are sporadically scattered across their sides and backs.[4] A distinctive dark colored mid-lateral stripe from the tip of the snout to the caudal peduncle is present.[4] The snout is relatively long and they have a slightly sub-terminal mouth.[5] The stripe is dark brown in females and is a rusty pink color in males during spawning season.[6] The lateral stripe is more pronounced and the caudal spot is present in juveniles.[7] Similar to other species of dace the western blacknose dace give the illusion of having no scales but in actuality the scales are so small they are hard to see.[4] Western blacknose dace are typically 2–3 inches long but can grow to as long as 4 inches.[4] They have a forked tail, single dorsal fin with 8 rays and no spines, a pelvic fin on the abdominal, no adipose fin, and an anal fin with 7 rays and no spines.[7]

  1. ^ NatureServe (2013). "Rhinichthys obtusus". IUCN Red List of Threatened Species. 2013: e.T202364A18228801. doi:10.2305/IUCN.UK.2013-1.RLTS.T202364A18228801.en. Retrieved 11 November 2021.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.). "Sinibrama obtusus". FishBase.
  3. ^ "Rhinichthys obtusus summary page". FishBase. Retrieved 2017-04-23.
  4. ^ a b c d e Wildlife, Ohio DNR Division of. "Western Blacknose Dace". wildlife.ohiodnr.gov. Archived from the original on 2017-02-10. Retrieved 2017-04-12.
  5. ^ Wildlife, Ohio DNR Division of. "Western Blacknose Dace". wildlife.ohiodnr.gov. Archived from the original on 2017-02-10. Retrieved 2017-04-23.
  6. ^ "Rhinichthys obtusus summary page". FishBase. Archived from the original on 2018-01-11. Retrieved 2017-04-12.
  7. ^ a b Grant, UW Sea. "Fish Details". www.seagrant.wisc.edu. Archived from the original on 2017-03-10. Retrieved 2017-04-23.