Deepwater Cisco
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Name and Code Family Salmonidae - trouts and salmons Species Coregonus johannae Taxonomic Authority (Wagner 1910) Common Name(s) Deepwater Cisco French Name cisco de profondeur Species Code 095 Family TSN 161931 Parent TSN 161932 Species TSN 161944 Conservation Status Global Rank (GRank) GX (2011-11-04) National Rank (NRank) NX (2017-12-22) Provincial Rank (SRank) SX (1988-10-31) COSEWIC Status Extinct (May 2000) SARO Status Extinct AFS Status Extinct (2,4) Status Notes none Ecological Value Ontario Origin endemic General Abundance extinct 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 (29-183 m), usually >64 m Reproduction Reproductive Guild Nonguarders: Open substratum spawners: Pelagophils Spawning Habitat(s) lacustrine Spawning Season summer-fall Spawning Month(s) August-September Spawning Temperature (°C) no data Fecundity no data Nursery Habitat(s) lacustrine Size and Age Adult Length (cm) 24.3-29.0 TL Adult Weight (kg) 0.15 Age at Maturity (yrs) no data Maximum Length (cm) 39.6 TL Maximum Weight (kg) 0.68 Lifespan (yrs) no data Ontario Records Record Length (cm) 33.0 TL Record Weight (kg) none				Ontario Range Map Ontario Distribution formerly occurred in Lake Huron; last reported in 1952 Photographs Notes second largest species of the deepwater ciscoes
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