I have kept these. truly beautiful barbs. Not usually a shoaling species but I'm sure they only shoaled when scared. Once settled in they patrol the tank looking for food, or having a bit of a fight with eachother. Unlike tiger barbs, they are really peaceful with other fish if kept in a good shoal. 8 at least looks amazing in a well planted tank. Also, their colours get better with age. More orange and a metallic green patterning.