I have never kept barbs myself.
Brown, yellow, cotton wool patches can be columnaris.
But if it's a dusting sounds more like velvet. Usually when fish have a parasite they usually flick and rub.
Taken a look at some pics of tiger barbs and they do have a golden sheen to them.,
Brown, yellow, cotton wool patches can be columnaris.
But if it's a dusting sounds more like velvet. Usually when fish have a parasite they usually flick and rub.
Taken a look at some pics of tiger barbs and they do have a golden sheen to them.,