Aquatic System - Toronto and Region Conservation Authority

Table 8-6: : Historic and Existing Fish Species in FMZ - 1Species NameScientific NameLast Recordamerican brook lamprey Lampetra appendix 8/16/2005atlantic salmon Salmo salar 9/29/1999black crappie Pomoxis nigromaculatus 8/30/2000blacknose dace Rhinichthys atratulus 8/16/2005bluntnose minnow Pimephales notatus 7/22/2003brook stickleback Culaea inconstans 8/16/2005brook trout Salvelinus fontinalis 7/18/2005brown bullhead Ameiurus nebulosus 5/17/2000common carp Cyprinus carpio 8/8/2001common shiner Luxilus cornutus 8/16/2005emerald shiner Notropis atherinoides 8/8/2001fathead minnow Pimephales promelas 6/27/2005goldfish Carassius auratus 8/26/2002johnny darter Etheostoma nigrum 8/16/2005koi Coregonus kiyi 8/8/2001longnose dace Rhinichthys cataractae 8/16/2005mottled sculpin Cottus bairdi 8/27/2003northern hog sucker Hypentelium nigricans 9/21/1998northern redbelly dace Phoxinus eos 8/16/2005pumpkinseed Lepomis gibbosus 7/24/2003rainbow darter Etheostoma caeruleum 8/16/2005rainbow trout Oncorhynchus mykiss 7/18/2005redside dace Clinostomus elongatus 8/16/2005rock bass Ambloplites rupestris 8/27/2002tadpole madtom Noturus gyrinus 5/26/1972white sucker Catostomus commersoni 8/16/2005Note”: Detailed fish collection records and data, in electronic format, are available upon request from TRCA AquaticGroup.FMZ 10: Middle Reaches of Main Rouge RiverFigure 8-11 summarizes current conditions in the middle reaches of the Main Rouge River andBeaver Creek. The main branch, as it flows through the mid-western area of the watershed,supports two target species (redside dace and American brook lamprey, although the latterwere not found in the most recent sampling records) and is influenced by upstream conditionsin FMZ 1 as well as adjacent landuse. An issue that has been identified by the surface watermodelling is the erosion potential at the downstream end of FMZ 1. This may have influenceson the substrates available to biota through middle reaches, but to date, this level of habitatinvestigation has not been undertaken. However, excessive sedimentation has been identifiedall through Beaver Creek creating a homogeneous instream environment inconsistent withsupporting a diverse fish community. Beaver Creek does flow through a very urbanizedlandscape with sedimentation being associated with stormwater impacts, not stream channelerosion.8-31