Ranitomeya sirensis highland are one of the coolest frogs available in the hobby if you ask us. A bright call really can surprise you as these frogs are about the size of your thumbnail, hence why they are called “thumbnails”. A fairly easy species to keep, these animals love bromeliads and other places to hide. A taller tank will be used as well, even though they are small the more space the better, and these will do well in groups. We recommend no more than 1 frog per 10 gallons, a pair could be successfully kept in a vertical 10 gallon, but we recommend at least 18x18x24.