I think mine is maybe 4 months old? Maybe. I think it might be less. I had them in half a 55 gallon but like I said they swam through the divider, so I grew them out in a 10 on guppy mix (flake, FD bloodworms, etc.). Then I put mine into a 75, and he is very outgoing, but not aggressive.
With sevs, oscar, and a snook. Eats cichlid gold and the very occasional market shrimp.
oscars at petsmart are the ugliest things but i bought my 2 from petsmart when they were babies so its all good. the ones that i see now have extremely faded colors and scars and holes in their bodies like they came from a shootout.