Brazilian Poison Dart Frog, Ranitomeya vanzolinii. These gems of the rainforest are primarily black with yellow spotting and bluish white reticulated legs. Ranging from Amazonian forests of Peru and Brazil. Active during the day with males occasionally making a trilling call. Because of the size of these poison dart frogs, they’re referred to as “thumbnails”. Females often reach 18mm with males being smaller. They can be kept in groups.