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Spawning of Cottus asper
Main Ref: Morrow, J.E., 1980
Data Ref.:  
Country:  
Spawning ground:  
Locality: Not specified
Season:
   		 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  111 111 111 111 111 111          
Sex ratio:    %  Ref.:   
Temperature: 8 - 13  °C
Gestation period: month/s
 
Length of offspring: cm
Batch spawners
Daily spawning frequency -
Mean:
Min Ref.:
Max Ref.:
Mean Ref.:
Comments: This species exhibits two genetically distinct forms. The inland form does not migrate to estuaries to spawn while the coastal form spawns in brackish water (Ref. 28211). Spawning may occur as early as February in the south and as late as July in the north (Ref. 27547).
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