07-21-2010, 08:06 PM
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Originally Posted by OscarLoverJim
I've been keeping oscars for a long time, one at a time, successfully. In general I agree a 75 gallon would certainly be better and larger better still. But if environmental care is maintained and the oscar doesn't become a true tank buster an oscar can be kept in a 55 without too much guilt. I know people who keep oscars in much larger tanks who have sicker fish than I've ever had because they don't keep up on their water quality, don't feed appropriately, etc.
I actually wouldn't put anything in a 75 with a single oscar. Especially not a pleco as I've seen many do, a pleco and an oscar are two fish with horrendous bioloads.
Im not doubting your experience or your ability to take care of your fish its just that 55 gallons is a tight sqeeze. It's only 12in and an oscar CAN and do grow to that size in a 55 gallon. Even fish like Green terror, Jack dempseys, etc who are 10" have a hard time turning around. That extra 6" makes a big difference. Clean water is everything but it isn't the only thing. I would still provide them actual room to swim. You must have had oscars for quite a few decades to keep them singly over and over like that. I also plan to keep them when I get a big enough tank.