My mollly gave borth to 30 fry over a week preiod. So oviously some were bigger then others. So everything was fine, they were eating well, getting along well and they just were normal. so i wake up this mroning and go to chek them out and 5 of the oldest fry are dead and the tiniest fry are alive. isnt it ment to be the other way round? can someone please give me an answer to why they died so young?