We have had 2 oscar spawns but have only been able to keep about 20 of the fry alive. Is it because they are a young pair or do the fry need a special food. We havebeen feeding them a fry powder that is 50 percent protien. Any thing else we can do should we leave them with their parents longer they were removed as wigglers. If left with parents we are afraid the other fish in the tank will eat them.