Ok well here is a little history on the matter. Before I new what I was doing I contacted a mail order dealer in Florida, I told them what species I was interested in. They told me that they would all be fine housed together in a 20 gallon tall aquarium. Originally It was (2) red-eyed tree frogs, (2) green tree frogs, and 1 Vietnamese blue tree frog. That was in august of 2008 since then both red-eyeds and the Vietnamese blue have died. Starting about 8 months after I got them first one red eyed, then the second, then the Vietnamese. Finally I talked to someone who knew something and they stated the obvious (don't house different species together) but after that the two green tree frogs seemed great. I clean their cage regularly, the only time I slipped up was a long weekend where i couldn't get someone to come and spray them, and it go so dry in the cage that both frogs buried themselves. I have since separated the two. The problem is that getting my car inspected is going to be extremely expensive, and I just cant swing a vet bill right now, and probably wont be able to for a month or so.