Would you risk it?

If the aro is three times the size or more than the gulpers, it should be fine. I've kept gulpers with dats, SD's and plecos with absolutely no issues.
 
Quite slow. Awesome, interesting and extremely hardy fish. Personally, I wouldn't mix them with Asian aros, but that's just me.
 
Quite slow. Awesome, interesting and extremely hardy fish. Personally, I wouldn't mix them with Asian aros, but that's just me.

I agree with you. Maybe in the future, if I have a spare tank. Any other catfish species that could mix with asian aro's that won't out grow a 220?
 
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