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		| Black Bullhead | 
	
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					| Name and Code |  
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							| Family |  | Ictaluridae - North American catfishes |  |  
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							| Taxonomic Authority |  | (Rafinesque 1820) |  |  
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							| Common Name(s) |  | Black Bullhead |  |  
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							| French Name |  | barbotte noire |  |  
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					| Conservation Status |  
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							| Global Rank (GRank) |  | G5 (2015-08-17) |  |  
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							| National Rank (NRank) |  | N5 (2017-12-22) |  |  
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							| Provincial Rank (SRank) |  | S4 (2003-11-10) |  |  
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					| Ecological Value |  
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							| Ontario Origin |  | native/introduced |  |  
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							| General Abundance |  | uncommon |  |  
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					| Length-Weight Regression Coefficents |  
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					| Habitat and Feeding |  
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							| General Habitat(s) |  | lacustrine; riverine |  |  
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							| Trophic Class |  | invertivore/carnivore |  |  
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							| Habitat Preference |  | lakes, ponds, impoundments, and oxbows, pools and backwaters of creeks and rivers with low gradient and soft substrates |  |  
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					| Reproduction |  
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							| Reproductive Guild |  | Guarders: Nest spawners: Speleophils |  |  
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							| Spawning Habitat(s) |  | lacustrine; riverine |  |  
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							| Spawning Month(s) |  | May-June |  |  
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							| Spawning Temperature (°C) |  | 16-24 |  |  
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							| Nursery Habitat(s) |  | lacustrine; riverine |  |  
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					| Size and Age |  
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							| Adult Length (cm) |  | 14.4-30.5 TL |  |  
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							| Adult Weight (kg) |  | 0.04-0.36 |  |  
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							| Age at Maturity (yrs) |  | 2-3 |  |  
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							| Maximum Length (cm) |  | 66.0 TL |  |  
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					| Ontario Records |  
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							| Record Length (cm) |  | 29.5 TL |  |  
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					| Ontario Range Map |  
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		|  |  Ontario Distribution | 
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							| southwestern Ontario; introduced to eastern Ontario |  |  
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					| Photographs |  
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					| Notes |  
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							| tolerant of pollution, low dissolved oxygen and high water temperature (35°C); moderately tolerant of turbidity; reported to hybridize with Brown Bullhead |  |  | 
	
	
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					| Information Sources |  
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					| Page, L.M. and B.M. Burr. 2011. Peterson field guide to freshwater fishes of North America north of Mexico, second edition. Houghton Mifflin Harcourt. Boston, MA. xix + 663 pp. |  
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