Ranitomeya uakarii have have only been legally available recently through Understory Enterprises, although in the past the pressure on wild populations due to smuggling is estimated to have been low. Their range is rather large, and they have been found throughout the Amazon basin in southern and central Peru, western Brazil, Colombia, and central Guyana. They are a more terrestrial species of Ranitomeya, but will utilize vertical space in a terrarium, especially if there are tall broad leafed plants. In my experience they have been an incredibly bold species, not even seeking cover when I have my hands in the tank to do maintenance or check for eggs.
The frogs pictured below are the ‘bronze legged’ type.
And here, a precariously positioned tadpole,