Honestly, I don’t see why people mix species from different part of the world anyway. There’s no benefit for the frogs, and just risk. The minimal benefit for the keeper isn’t worth it. Personally, I don’t think I’d enjoy keeping animals if I wasn’t positive I was providing the best I could for them. Seeing them thrive and knowing they’re safe is so rewarding, I don’t see why anyone would sacrifice that just to mix species.