Blackfin Cisco
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Name and Code Family Salmonidae - trouts and salmons Species Coregonus nigripinnis Taxonomic Authority (Milner 1874) Common Name(s) Blackfin Cisco French Name cisco à nageoires noires Species Code 097 Family TSN 161931 Parent TSN 161932 Species TSN 161946 Conservation Status Global Rank (GRank) G1Q (2011-11-07) National Rank (NRank) NU (2017-12-22) Provincial Rank (SRank) SU (2018-03-28) COSEWIC Status Data Deficient (Apr 2007) SARO Status Data Deficient AFS Status Possibly Extinct1 (2,4) Status Notes (1) Lake Nipigon subspecies (C. nigripinnis regalis) designated as Threatened (2,4) by AFS Ecological Value Ontario Origin endemic General Abundance rare Tolerance intolerant Economic Importance commercial fishery (historical) Length-Weight Regression Coefficents Intercept (a) no data Slope (b) no data Length Basis n/a				Habitat and Feeding General Habitat(s) lacustrine Environment pelagic Trophic Class planktivore Thermal Regime coldwater Habitat Preference clear, cold, deep waters (55-165 m), usually >91 m in Great Lakes; 10-50 m (optimal 33-37 m) in Lake Nipigon Reproduction Reproductive Guild Nonguarders: Open substratum spawners: Pelagophils Spawning Habitat(s) lacustrine Spawning Season fall-winter Spawning Month(s) November-January Spawning Temperature (°C) <5 Fecundity no data Nursery Habitat(s) lacustrine Size and Age Adult Length (cm) 27.6-44.4 TL Adult Weight (kg) 0.17-0.83 Age at Maturity (yrs) 4-5 Maximum Length (cm) 55.0 TL Maximum Weight (kg) 1.11 Lifespan (yrs) 11-14 Ontario Records Record Length (cm) 55.0 TL Record Weight (kg) 1.11				Ontario Range Map Ontario Distribution Lake Nipigon, Little Jackfish River, Ogoki River, Algonquin Park (Cedar, Hogan, Mink and Radiant Lakes), Lake Superior, Lake Huron (extirpated); last reported from Lake Huron in 1960 Photographs Notes largest species of the deepwater ciscoes
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