Started off with six Barbs, they were the first fish in the tank, approx three months ago. Only lost the one (Today)
Was advised to buy a min of six, gladly obliged. Have seen no signs of aggresion in the three months since I have had them. Even when I added the Cardinals they didn`t even batter an eyelid. They occasinally have a quick joust in the middle of the tank with each other to acchieve pecking order but this only lasted for a couple of minutes a day. I don`t believe that nipping had a factor in their deteriation.