Irrlich
Vanilla eXee
@irrlich: The only thing they seem to ignore are ottos, but again, this depends on the puffer. I have an otto in with mine (the other two I purchased died within the first few days) and I've had them since January, so far they do ignore it. I have heard stories of them really hurting a pleco, but again, it could just be luck of the draw.
Strange, I always saw pleco's as the one fish most immune to bullying. Large catfish in general. They don't seem likely to attack but their harness and size should provide some good protection?
I've never really kept a pleco for long though. Only took care of my cousin's for a while.
But ottos seem so tiny and vulnerable and fragile sad
How about redtailed sharks? I know those are the kind of fish that other fish wouldn't mess with if they are wise.
@Ammonia: Awesome! How many did you get? And in what kind of setup?
Just one in a 3 gallon, I will probably get more when I find some.