One inch of growth per year or 1.5" the first year and only 1/2" the second year if food is limiting. I see at fish farms numerous 2" one year old YP, mostly males. Normally for a 2 yr old YP the size range should be 4" to 10" depending on sex and amount of food it is able to procure.
Last edited by Bill Cody; 06/20/15 01:55 PM.