I’ve got 6 borellii pantanal that are 1.5 months old and about 1-2 cm in size now and doing well. They’re still with their mother which seems to be fine (and she remains quite yellow). No other fish - they have one side of a divided 60 gallon all to themselves. The juveniles started displaying at each other in the last few weeks and doing some chasing / striking each other (territorial stuff). I don’t think there’s any damage being done (can’t see any fun damage or “defeated” behavior) but wanted to check with the experts if this is anything to be concerned about.