There are 3 tiger barbs in my 20 gallon tank,one of them which is colored orange/white striped bites another one colored white/black striped.What do I do?Is this normal?
As stated, they are one of the more aggressive barbs. The larger the group, the better off you are. Not only with aggression towards each other, but also to other fish in the tank.
I love it how no one bats an eye at a freshwater question :). Others would be sending the poster to the nearest freshwater forum. I agree with the others, bump up the numbers a little and the aggression will be more spread out over the group rather than focused on one fish.