So, I bought 2 Green Fire Tetras yesterday, and put it them my 20G. I know that tetras are schooling fish and prefer to be in groups, but they school with my cardinal and rummy nose tetras (pretty much one big school). Anyways, the LFS I got them from said those were the only two Green Fires they had, and had been in that one tank for a long time. So, as I don't have access to online suppliers, would just the two Green Fires be happy?
