Not so much tank size but water quality in my experience. Hard to keep water clean with 2-9 inch oscars in a 55.
Can Oscars max out at 9"-10"?
- Thread starter Jonnyakawombell
- Start date
I agree; one little 4.5-inch Oscar was a pain to clean up after in a 55-gallon; I can't imagine cleaning up after two 9-inch Oscars.
My Big Boy was about 14 inches. He lived in a 125 most of his life. 
Yah 9 inches is either a stunt, a runt or juvie size. Brick was 15 inches and nearly 4lbs. Raised in a 225 with tankmates. Waste output was a LOT even though he didn't eat nearly as much past a foot.
Glad you rescued those Os. who knows, maybe they'll tack on another inch or two in time. Stunted fish often look old (bent, lumpy, tatty fins) so it does add to the confusion of "ageing" them.
Glad you rescued those Os. who knows, maybe they'll tack on another inch or two in time. Stunted fish often look old (bent, lumpy, tatty fins) so it does add to the confusion of "ageing" them.
