I just started a tank over the summer...I knew from the beginning I wanted Tiger Barbs in the tank...Told the guy at the pet store about it...So I started off with 3 black skirt tetras to start out the tank...Then got 2 more and 3 Australian rainbow fish...Finally added 5 tiger barbs.....They dont really nip at all...I think its because there are 5 in there and the other fish were already in the tank a while before I got the barbs