Tiger Barbs(Barbus tetrazona tetrazona)
These little fish are generally not regarded as good community fish as they tend to be aggressive and known fin nippers. They definately need to be kept in a large shoal, firstly for show and secondly which I think is of importance, is to keep them together. Shoaling fish by nature will tend to swim together,by instinct. This stems from safety in numbers syndrome, so if the shoal stick together there's less likelyhood of them being aggressive towards other fish. This is the theory, in reality there always the stragglers and they could be the problem. You will also need a fairly large tank, because as the Angels grow, and they can grow in a tank up to around 6" in diameter they will crowd the barbs and barbs don't like being crowded. So to answer your question, I would advise caution.