I believe the minnows didn’t survive just because he put hole in ice and just dumped them in without trying to accumulate them to the temp- at least that’s what I figured. I have tons of frogs,tadpoles and few turtles living in it now. I know there are a few lakes around me that have RES in them but I have also heard people have hard time with them this far north. Stoney creek said that he has customers up where he is that have done fine with them.