Hey guys!

I need some help with stocking a 41 gallon tank, admittedly i'm clueless when it comes to coldwater fish since i'm more of a tropical fish guy however a school near me has a 41 Gallon tank and they're only interested in having a cold water setup as they do not want any extra cost so here i am!

I'm not too bothered about goldfishes, i understand it should be 20G for the first one and 10 after that for any additional ones, i'm looking for one set of schooling fish (i've read mixed stories about the white cloud minnows so not too sure about them), a couple of bottom feeders and uh...i'm not sure, just fishes which will light the tank up nicely and something that the kids will enjoy really.

Any help would be much appreciated, thanks!