I have noticed lately that 2 of my Tiger Barbs, I have 8, (not sure if the same 2 or different on each occasion) will face each other and nip each other's face. They seemed to be aiming for the side of the other fish's face and don't seem to be trying to hurt each other. I have seen them keep this up for 10-15 mins. at a time.
Is this some sort of ritual, are they actually fighting, one trying to 'step up' in the pecking order?
Is this some sort of ritual, are they actually fighting, one trying to 'step up' in the pecking order?