I find prasinus to be extremely active, and not as shy as some may think. Yes, the wild caught adults can be skittish, but certainly not reclusive or staying hidden all the time. WC adults even though flightly are very willing to take food items off of the end of feeding hemostats or tweezers. I've worked with several gtm's but one pair in particular that was maintained in a 4' tall by 3' deep by 4' wide enclosure for some time, where they eventually bred and produced eggs. This was the largest enclosure that was available to this pair, but I would suggest providing an enclosure that was at least 5 or 6 feet tall.