diseased oscars?

Question
I had five oscars in my 55 gallon tank, the biggest being four inches. the biggest is the dominant one and hes very agressive and he is a tiger. i also have another tiger that follows the dominant one around and can be agressive. and i had 3 albinos. one 3 inch one, and two smaller ones that never grew since purchase and were apparently the weakest. I went and looked at my tank one night and one of the smaller albinos was laying around the bottom and his skin was reddish and scales were peeling off. he died shortly after i discovered him. so everything was fine otherwise, but about a week after his death the other small albino developed the same thing and is on the verge of death now. i have NO idea how this came about, and it is not happening to my other ones. they are healthy and happy. what happened to them?

Answer
Dear Stephanie,
I'm seriously wondering if the ones with the reddish skin and peeling scales were attacked by the more higher ranking oscars. This is my best conclusion. Five oscars in a 55gallon is really way overstocked. The most a 55gallon can handle is 1 Oscar. I have a full-grown Oscar in a 55gal and he has grown the width from the front to back of the tank in length ((12 inches)) and he really needs more room. Not the mention that oscars produce a huge amount of waste for any aquarium and that many oscars in a 55gal would be a very polluted tank. I'm not meaning to sound harsh, but you are getting symptoms already of an overstocked tank with stunted fish and sickly ones who are getting attacked.
You may not noticed your fish attacking each-other but when you are not around that's when they may be doing all the damage. If they see people around, their minds are probably on food so they aren't concentrating on fighting.

I know this is bad, but you may be best either getting a larger aquarium. I understand that since losing the two poor Albinos, you have 3 Oscars right now. Three full grown 12" oscars would require at minimum a 80-90Gallon and ideally at least a 100gallon aquarium.
Your other option would be to give away your other oscars and just keep one in the 55gallon.

I know this isn't good news at all. But unfortunately that's how things work with Oscars. They are great fish and I hope you can get things straightened out soon without anymore losses...

Best wishes,
Karen~