ended up draining the cold tank, & butchering fish... the middle tank I've been able to keep at 80 degrees, so that one is still going... found out my 800 watt heater in the tank I shut down, baked an algae cookie on the heating element, under the guard... buildup was about an 1/8 inch thick solid, between the heating element & the guard, so the heat was not operating efficiently... checked the middle tank, not seeing any fish, with the tank all "wrapped up" but nothing sitting on the bottom, couldn't catch any, so assuming they are good... supposed to get up to the 50's, later this week...
was pretty disappointed in the sizes of the fish... they ranged from 5 inches to 8 inches in the tank I drained last night... with the bulk of them in the 5-6 inch range, so no filleting done last night, left them on the bone... the males were biggest, at 8 inches, as expected but only 4-5 males out of 50... a handful of 7 inch females, the rest were 6 inches or less... this tank the fish were noticeably smaller than the tank that is still going, so hopefully, there are some in that tank of fillet size...
learned, that I'd just as soon, not try to do females outside in my short growing season, or start with a bigger fingerling size to start with... the supplier sent me 3/4 inch fish to start... if I can get some breeding over winter, maybe I can start with 2-3 inch fish in the spring, next year, & use the females as feeders in my other tanks... ( that means sexing them, when still in the 2-3 inch size or smaller )