HI Graeme
Yes I hand the fish bought and in the bag sitting in the tank in 15 mins a further 15-20 mins for the bag to get to the same temp as the tank then I released them one at a time pets at home say I should buy more fish a male to split the females up but the last male I had years ago killed the females I was very up set by that and I don't think its fair that one female is swimming madly and the others shy and hiding a way