bcarlos Member Oct 9, 2010 #3 I've seen it done, but IMO it's a big no-no. Koi are coldwater fish (mine stay outdoors through the dead of winter) and warmer waters weaken their immune system. Both are awesome show fish, but I don't think they belong together.
I've seen it done, but IMO it's a big no-no. Koi are coldwater fish (mine stay outdoors through the dead of winter) and warmer waters weaken their immune system. Both are awesome show fish, but I don't think they belong together.
