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Spawning of Cottus asper
Main Ref: Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter, 1989
Data Ref.: Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter, 1989
Country: USA
Spawning ground: riverine
Locality: Southern California to Gulf of Alaska
Season:
   		 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
111 111 111 111 111 111 111          
Sex ratio:    %  Ref.:   
Temperature:  -   °C
Gestation period: month/s
 
Length of offspring: cm
Batch spawners
Daily spawning frequency -
Mean:
Min Ref.:
Max Ref.:
Mean Ref.:
Comments: Migrate downstream to spawn under rocks (Ref. 27547, 265). Polygamous males guard the eggs (Ref. 27547, 265).
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