Hello and welcome to FF! Here is a care article for one of their species: Frog Forum - Imitating Dart Frog, Ranitomeya imitator / Dendrobates imitator (Schulte, 1986) - Care and Breeding. Would recommend an 18x18x24 in. enclosure for a breeding pair or trio. Reason for extra height is because the drainage/false bottom and ABG soil/leave layers will take around 6 in. when build up. Good luck !