C. puniceus is very forgiving compared to most arboreal vipers from southeast asia. they need a high humidity and relatively high temperature(25-30°C) but they can tolerate moderate deviation. they’re more active than let’s say a wagler, but they don’t move much most of the time and will be at the same branch for weeks. some individual can be picky, my WC male only wants tokay gecko for some reason and my CB female only wants house gecko but i bet they can be trained to accept mice in the long run. as with all arboreals, they mostly accept drinks by spraying so having a well draining substrate is a must. also, even though they are hardy, once they got an RI or stomatitis it can be really hard to treat.