milindsaraswala
Fish Fanatic
my 2 tiger barb putting there mouth in mouth getting round very fast. What it means they are fighting or just playing. Is there is anything wrong in it??

The question really is... are there only two tiger barbs? Because if there are only the two, once they figure out which one is in charge, the one in charge is going to make the other's life miserable. If there is a good sized school, however, the top fish can spread his aggression out among many fish so typically no one fish will be too stressed.
Otherwise, it sounds like they are just behaving in typical pecking-order type behavior.
I had a goup of barbs and they did this but they would create a little pit in the grave from fighting. they go at it for a little bit then stop and go back to normal.