Actually I think petsmart does have some eartheaters right now as a special. I can't remember what species, but they had some last time I was at mine.
Juxtaroberto;4808132; said:LOL if you say so, but even goldfish are aggressive with their meals. I thought aggressive meant things that went out of their way to hurt other things. A red devil would probably kill everything else in that tank.
You could find smaller species of ray. They constantly shift the sand around. I'd still be worried about the Oscar with Eartheaters, though. When they realize a certain fish won't stand up to them, they sometimes bully.