I'll third Buenos Aires. Very entertaining tetras; my school gave my tank a lot of much-needed action. Great with cichlids. Don't mix them with passive fish because they WILL hog all the food, not allowing any passive slow fish to get a bite. They need to be with boisterous/active but peaceful fish. In other words, fish that will fight for their food but will otherwise ignore the tetras. I had them with EBAs, and they did great together.