here are pics of two of my BNs. Until yesterday they were both in the own smaller tanks but I've had to move some fish around so they now share a 3ft tank with another smaller longfin BN.
The smaller longfin seems almost unaware of the others and swims and feeds unhindered by the other two.
However these two, a smaller L144 and a larger Albino spend alot of time sussing each other out. The smaller L144 keeps swimming up to the bigger one and wafting it's tail towards it. It then backs up until it's almost on top of the albino. They both puff up all their fins to make themselves look big and then the little L144 swims away after awhile.
The larger albino doesn't seem to bother with the L144 unless goaded.
Is this 2 males displaying to each other and deciding on pecking order or a male and a female playing mating games?
I'm not sure of their sexes so would appreciate some views on what sex they may be.
In the three photos belowe the smaller L144 is on the cucumber with the larger albino in the log behind.
L144 to the right with Albino to the left
close up of L144
Close up of Albino
Look forward to your replies