Ok, so having alittle trouble with one of my oscars.. I have a 55 Gal with 2 oscars, one black tiger oscar which is about 7-8 inches and a smaller Albino about 5 inches... now I have 2 electric blues and yellows in the tank for a friend (which have started breeding indicating the water is well maintained ) all water paramiters are 0 PH is around 8. now last night I found my albino to be raging.. he was attacking everything! even the bigger oscar who hid behind the filter. I tried to calm him down the only way I know how... which was putting my hand in there to have a play but he still carried on! I tried feeding him and he still was flareing all his gills/fins. My black oscar is the most placid fish ever... biggest chiller and will only go for feeder fish, is getting bullied ive had them both in an established tank for about 3 months, I know for both oscars I should get a bigger tank which I am looking into but I'm just worried for my black oscar! Also.. will the oscar eat my friends yellow labs fry? she has a prime set up underneath a rock which only she can fit in!