Thanks Pharaoh, i think i will add 4 more (I can only get them in 4 - 5cm) and once they start to pair off (if im lucky) i can remove the ones left, and their will be less, or if they somehow all pair up i can sell one, if not some of the pairs. Thanks for the help again, they are definetly cool fish.They look good. I'd say you could add a few more, but once they pair off, even a 150G will be small for two or three pairs. They like their space.