would tiger barbs make good dithers? i have 5 haitiensis in a 55g and two have now paired up. i plan on selling the remaining 3 but want to add some dithers so they wont fight each other. i know tiger barbs wont work in the long run but are they strong enough to make in there while the haitiensis are young? the female is about 2.5" and the male is 3".