I've never seen a green Oscar before....if they are out there I want one too. I have the albino ones...I just love their color, with that little bit of orange in them. They go well with my Parrot fish (orange) lol

I answered your ? about salt on the other post, but just in case you don't see it......yes salt would be good for them too. Plus from looking at your sig. it looks like you have a red devil chiclid too. And they also need salt. It is a Red Devil right....I could be wrong from just looking at your sig.

You do know that you can stunt the growth of you Oscar by keeping her in a smaller tank. I did mine...she's in a 55 gal. and been there for years...she stoped growing. It wont harm her any.
Just thought I let you know, just in case you worried about the need for a bigger tank.