I'm interested in looking at some arboreal lizards that spend almost all of their time arboreally. I had a thread a few days ago where I asked about arboreal setups withs a water substrate (a few inches of water covering the bottom of the enclosure) and given the responses I received I feel I can move forward with this idea. Originally I was looking into perhaps getting a green tree monitor in this kind of setup, but considering their price and the required enclosure size (6' tall, 4' wide and 2' deep) they are quite a bit out of my range. So I guess I'm looking for a highly arboreal lizard that would be able to stay in a medium-sized (around 60 gallons) enclosure for life, and would work well with a water-substrate setup. The water would be filtered continuously and changed regularly. So, any suggestions?