Nooksack Dace are a small (<10.5 cm) streamlined fish, with a sub-terminal mouth (the snout overhangs the mouth), sometimes with a black stripe in front of the eyes. Scales are small with pale markings visible at the back and front of the dorsal fin when viewed from above. The tail is forked. The rounded back is olive-grey; the belly is silvery-white with a dull brassy stripe along the sides. Lower sides often splashed with dusky speckles. Sexes are alike, but males tend to have longer and darker pectoral fins. Juveniles have a very conspicuous black line on their sides, from snout to base of tail.
BC Conservation Data Centre. 2010. [Internet] [Updated May 17 2010] Conservation Status Report: Rhinichthys cataractae - Chehalis lineage. - COSEWIC 2000. COSEWIC assessment and status report on the nooksack dace Rhinichthys sp. in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vii + 8 pp. - Pearson, Mike. 2009. [Internet] Guidelines for the Collection of Nooksack Dace (Rhinichthys cataractae spp.). Prepared for the Non-Game Freshwater Fishes Recovery Team (BC). - Pearson, M.P., T. Hatfield, J.D. McPhail, J.S. Richardson, J.S. Rosenfeld, H. Schreier, D. Schluter, D.J. Sneep, M. Stejpovic, E.B. Taylor, and P.M. Wood. 2008. [Internet] Recovery Strategy for the Nooksack Dace (Rhinichthys cataractae) in Canada. Species at Risk Act Recovery Strategy Series, Fisheries and Oceans Canada, Vancouver. vi + 31 pp. - Pearson, Micheal. 2007. [Internet] An Assessment of Potential Critical Habitat for Nooksack Dace (Rhinichthys cataractae ssp.) and Salish Sucker (Catostomus sp.). Fisheries and Oceans Canada. C S A S Canadian Science Advisory Secretariat Research Document 2007/058. - Pearson, Michael. 2000. [Internet] The Biology and Management of the Salish Sucker and Nooksack Dace. Proceedings of a Conference on the Biology and Management of Species and Habitats at Risk, Kamloops, B.C. Volume Two. B.C. Ministry of Environment, Lands and Parks, Victoria, B.C. and University College of the Cariboo, Kamloops, B.C. 520pp. - Proulx, Gilbert et al. 2003. A Field Guide to Species at Risk in the Coast Forest Region of British Columbia. Published by International Forest Products and BC Ministry of Environment. Victoria (BC).
Species Profile prepared by: Pamela Zevit with Mike Pearson for the South Coast Conservation Program (SCCP) in partnership with: International Forest Products (Interfor), Capacity Forestry (CapFor). Funding was made possible through the Sustainable Forestry Initiative (SFI): http://www.sfiprogram.org/ Updated and revised by: Isabelle Houde, RPBio in consultation with the SCCP. Part of the National Conservation Plan, project was undertaken with the financial support of the Government of Canada. Dans le cadre du Plan de Conservation National, ce projet a été réalisé avec l’appui financier du Gouvernement du Canada. Every effort has been made to ensure content accuracy. Comments or corrections should be directed to the South Coast Conservation Program: firstname.lastname@example.org. Content updated March 2015. Image Credits: Nooksack Dace: Mike Pearson, Longnose Dace: Peter Koetsier Boise State University, Habitat: Mike Pearson (riffle), City of New Westminster (backwater). Only images sourced from “creative commons” sources (e.g. Wikipedia, U.S. Government) can be used without permission and for non-commercial purposes only. All other images have been contributed for use by the SCCP and its partners/funders only.