I've been doing some reading on this subject, we are planning on setting up a tank for a pair of clowns. I do know if you want to try to save them you should take the rock out of your main tank, put it into a smaller tank with airstones for circulation and a heater. Leave the bottom bare, makes it easier to clean. There is a special food that you need to feed the fry for 3 days to 3 weeks. I can't remember the name, but I can get it for you. Any that live 10 days begin to morph, get thier stripes. If you are interested in trying to save them, let me know I will get the other info for you. Good Luck! Lisa