well ive never heard of a zebra oscar but its probably a tiger oscar(i can see the pic its way too blurry) and no i dont think you can train them to roll over. But they can be trained in a way... i pet mine and hand feed them.
I'm almost posotive it is a tiger. Just a very nice one at that, good pickup! See the one in my avatar. That one was like metallic.. It was from walmart but died later! I thought I might be able to save it!
I'm sorry nobody gave you any real answers. First of all, yes, your Oscar in the attatched photo is indeed a Zebra Oscar. Please note that zebra oscars are more commonly known as Common Oscars. Wal-Mart is known most for calling the Common Oscar a Zebra Oscar, but you were on the right track. Second, yes, oscars can be taught to roll over for a treat, however, I am not familiar with fish training, so I cannot help you in this field. Don't be afraid to contact me.
~Taylor~ [email protected]