Kept in a large enough group, they keep themselves to themselves. At least 6 fish. Not aggressive like Tiger Barbs. Nice fish.
I had a large number for a while. I was breeding them to make sure that they bred true. There is some doubt about their classification, it had been suggested they were hybrids. Normally hybrids are sterile, and if not, throw up examples of their original species. I never found that to happen, they always bred true.