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Spawning of Heterodontus japonicus
Main Ref: Compagno, L.J.V., 1984
Data Ref.:  
Country:  
Spawning ground:  
Locality: Western North Pacific continental shelf
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: 12 month/s
Ref.: Compagno, L.J.V., 1984
Length of offspring: 18 - cm
Batch spawners
Daily spawning frequency -
Mean:
Min Ref.:
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Comments: Oviparous; each female usually lays two eggs at a time, for 6 to 12 spawnings; eggs hatch in about a year; size at hatching about 18 cm. Eggs are laid in rocks or in kelp at depths of about 8 or 9 m and are present from March through September. Eggs are more abundant, however, in March and April.
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