Speaking from my experience, and going off of what I've read on tats, I think you'll be fine. Tats don't seem to be to aggressive, obviously there will be some bickering, it's large predatory fish, generally Tats stay towards the bottom from what I know? Correct me if I'm wrong. Odoes stay mid to top. Which will help. Now a tat bite is different from a wolf bite, I will agree on the odoe may freak out shortly IF bitten but that's never lasted long with mine it's only ever been when she tries to get away and when she is separated from the other fish she's fine, though this isn't to common. But I will say again, is the only one I've kept, not every situation is the same. And Al has more experience with them than I do, and he has it with multiple specimens, maybe they just act different when solo, maybe not. Regardless, let us know what you decide on and good luck. Oh and tinfoils grow fast and may make the atf timid. Bala Sharks might grow slower though or at a similar pace which may be better. Though they may not be able as hardy, so maybe tin foils are your best option.