I have some brochis splendens but I much prefer my new pygmys (don't tell them I said that), my pygmys mainly stay in their 6 and swim around the middle a lot, much funner to watch imo, smaller too so you could get more of them as apposed to if you were to get emeralds. Also they might be picked on by much larger fish. But they are not green or purple, here's some pictures of my little guys if you are interested.