I've never kept barbs, but have seen them mercilessly rip the fins off corys.
This was in an Lfs, there were about 30 tiger barbs & a few bronze corys, the barbs wouldn't leave them alone, the poor corys hardly had any fins left
I had to get someone to take the corys out of the tank, whether they survived or not I don't know.
A friend of mine also had trouble with barbs nipping at her fish, she rehomed them.
So yes, barbs can be nippy, which is why I always say that just to warn people of the possibility
This was in an Lfs, there were about 30 tiger barbs & a few bronze corys, the barbs wouldn't leave them alone, the poor corys hardly had any fins left
I had to get someone to take the corys out of the tank, whether they survived or not I don't know.
A friend of mine also had trouble with barbs nipping at her fish, she rehomed them.
So yes, barbs can be nippy, which is why I always say that just to warn people of the possibility