Don't recall adding your name in to that comment about quoted oscar size, just going off the averages of what people claim but never back up with proof. Had a guy swear he had a 20 inch oscar, but again no pics. His excuse, he didn't think it noteworthy because oscars commonly get that big in the home aquarium with proper care. There's a a youtube video of a guy claiming an 18 inch oscar raised in a 40 gallon tank it's whole life. Funny though, when the oscar turns neither tail nor nose touch glass. Either the widest 40 on record or an extremely limber oscar. In the comments are claims of 20, 22 and 24 inch fish. None of them have documentation either.
Don't get the not having a camera bit, but then again I've always had one since the old Kodak instamatic 110 with flash cubes.
Still waiting on actual verifiable measurements of one, not camera tricks and guesses.