The sculpins are about 2in long, in a 55gal. All levels are fine. They are in a native tank I keep at room temp high 60's low 70's. There are also, in the tank, 6 very small, yet too big to eat, crayfish, a 3in pleco and a 3in chub.
You are right about the prepared foods, they would hardly even acknowledge any of it and I tried everything I could find.
Just found something they would eat, thank god! I went to the LFS and got a dozen baby guppys and they each ate one right away.
Thanks for the help.
-kyle