I'm still deciding between the two. I was leaning a little more towards auratus because I wanted to put maybe 6-8 frogs in the 30gal tank and I read that azureus is more happy in smaller groups. Do you have a prefference having both of them? I think this might end up like fish keeping and I'll have a ton of 5 gal vivariums with as many dendrobates as I can get my hands on. Is it possible to have both azureus and aruatus together in one tank or will they fight? I read that its possible to cohab them as long as you watch out for interbreeding between the differnet speicies. thanks for your replies.