Hello fellow monsterfishkeepers, this might be a frequently asked question so don't yell at me pleaseeeeee haha, but anyways i plan on getting 2 silvers and 1 black arow. I know some people who have bad luck and good luck with pairs, but you think the black arow is going to make a difference? or should I even go into a bigger number in the odds? As of right now the size ill be getting them at are 5-6" and they are all going into a 240g tank. since the 125g is too small opps.....dimensions are 96x24x24 Thanks for your 2 cents 