As far as I know, production of triploids is not 100% effective. I think only 98% or so of grass carp end up triploid, which is why they have to be individually tested and certified before release from the hatchery.
If the same goes for LMB and Crappie, then what is the point of triploid production. The equipment used for ploidy testing costs around $40K.
Thanks Todd, I thought it to be more for economic reasons than science.
