This fantastic arboreal is one of the most popular species in the hobby today. Slings start at a beautiful iridescent blue and finally changing into their adult colors of purples, greens and blue. They need humidity and ventilation. I keep small slings in vials with not only holes in the lid, but also in the top third of the vial. Not aggressive, but can be quick. Slings especially have a habit of jumping out of my hand, which they do in the wild to escape predators. A true hobby classic.