Grass Carp
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Name and Code Family Xenocyprinidae - East Asian minnows Species Ctenopharyngodon idella Taxonomic Authority (Valenciennes 1844) Common Name(s) Grass Carp French Name carpe de roseau Species Code 219 Family TSN 163342 Parent TSN 163536 Species TSN 163537 Conservation Status Global Rank (GRank) G5 (1996-09-13) National Rank (NRank) NNA (2017-12-22) Provincial Rank (SRank) SNA (1997-10-02) COSEWIC Status none SARO Status none AFS Status none Status Notes none Ecological Value Ontario Origin introduced General Abundance rare Tolerance tolerant Economic Importance invasive species Length-Weight Regression Coefficents Intercept (a) -4.5900 Slope (b) 2.8700 Length Basis TL				Habitat and Feeding General Habitat(s) lacustrine; riverine Environment benthic Trophic Class herbivore Thermal Regime warmwater Habitat Preference lakes, ponds, pools, reservoirs and backwaters of large rivers at depths of 1-3 m; preferred water temperature 25.3°C Reproduction Reproductive Guild Nonguarders: Open substratum spawners: Pelagophils Spawning Habitat(s) riverine Spawning Season spring Spawning Month(s) May-June Spawning Temperature (°C) 18-24 Fecundity 255,000-1,276,000 Nursery Habitat(s) riverine Size and Age Adult Length (cm) 51-86 TL Adult Weight (kg) 1.5-6.8 Age at Maturity (yrs) 4-5 Maximum Length (cm) 145 TL Maximum Weight (kg) 40.50 Lifespan (yrs) 11-21 Ontario Records Record Length (cm) 110 TL Record Weight (kg) 18.52				Ontario Range Map Ontario Distribution southern Lake Huron, Lake St. Clair, Lake Erie, Grand River, Niagara River, Lake Ontario (Toronto Islands, Jordan Harbour, Bay of Quinte); first reported from Ontario waters in 1985 Photographs Notes indigenous to eastern Asia; expanding range from United States introductions; tolerant of wide water temperature range (0-33°C) and low dissolved oxygen (0.2 mg/L); use as bait prohibited
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