Red-belied tamarins are mostly dark brown with red marks on their belly and chest. The white “moustache” around the nose and mouth gives them a distinctive appearance.
The males and females look the same making them a monomorphic species. They are a relatively small New World monkey that are active during the day and spending their time the trees. They are skilled climbers with a long tail that helps them to balance while moving through the trees and small claws to help with their grip.
They live in social groups of up to 15 individuals consisting of a breeding male and female, their offspring, and other male helpers.
Red-bellied tamarins play an important role in the ecosystem, that they inhabit. By eating fruits, they carry out seed dispersal and therefore contribute to the healthy growth of plants in the rain forest.