Originally Posted by FishinRod
At what length of stockers do our experts think the average pond owner could hand sort GSF out of HBG? .

One study in Penn looked at the ability of experts (working fisheries science grads) to correctly id wild caught fish. The result was about 70% correct.

Iding GSF vs HBG is extremely hard to do for experts. I don't think avg pond owners would have much success at all even with adult fish much less juveniles. I would not bet that I could do even a 70% rate on adults - some would be obvious on both spectrum ends but near the middle is a coin flip. Even the % male HBG offspring very from 98% male to 66% male in studies probably due to GSF populations DNA being corrupted.

HBG - GSF threads

HBG pic/question - Pond Boss Forum - https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=256047&page=1

an el dorado sunfish pond - Pond Boss Forum - https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=24426&page=1

managing for trophy GSF - Pond Boss Forum - https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=102096&page=1

Last edited by ewest; 06/03/24 03:36 PM.