ps - two of the fish have already died. Reminds me a bit of the poor ill-fated gerbils we used to have when I was little. They never seemed to last much more than a week, either. I wonder if i could tempt Son with something a little more hardy for him to nurture, like a cactus. Although come to think of it, I managed to kill a cactus once, by over-watering it (I was nine). I thought that as the poor thing didn't get much water in the desert, I'd make up for it and give it lots. One day it popped.