 The spawning behavior of the species is unknown , but it is presumed to be polygamous with the female choosing the male . Pair bonding has been exhibited which is assumed to be a behavior that serves to insure fertilization of the eggs during the season . It was estimated that females can spawn approximately every four days for a total of 34 times per season . Depending on the size , the average female may lay up to 195 @,@ 000 – 8 million eggs during spawning season , with the average female laying 2 @.@ 3 million eggs . 
