I'm going set up a new tank and wanted some suggestions. I'm either doing a 20 gal or a 40 B. I'm going to make it a planted tank and am going to add 25 red cherry shrimp & don't know what type of fish to get. The reason behind the tank is to grow plants to add into my large tanks as well as have the shrimp breed for food and wanted the fish to do the same. I've never really kept smaller fish. I was thinking maybe some fancy guppies or killie's. Really just want something that's hardy, readily breeds and won't eat the shrimp.