I wasn't sure I would like these in my new 29 gallon. I purchased 2 males and one female. They adapted to my tank quickly and have been healthy. I returned to Reef Life and purchased more. They are really graceful fish as they explore every nook and cranny in my tank. Their red tails and long black threadfins are appealing. They live peacefully with my Corydoras, Mystery Snail and Japanese Trapdoor snails.