How big will this Oscar get in my 90g aquarium?

  • We are currently upgrading MFK. thanks! -neo
my friends oscar hit 12 -13 inches in a 55 in about 2 1/2 years. and that was in subpar water quality.
 
To the OP I've had my oscar in a 125 for two years and he's about 11" maybe. I haven't actually measured him out of the water. But I doubt he will ever reach 18". I also only say he cuz in the last two years it's never laid eggs.


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Just saw this guy at LFS at least 18" could not believe my eyes. Poor guy was in bigger than a 55. But its all the store had and I'm sure its a rescue.
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bottom line is they can get to 18" this documented fact, most will kept Oscars will only reach 14 to 16" average over a span of 5 to 10 years. mines 1 year 2 months and a little over 10"
 
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