Between 2010 and 2013, a group of researchers and scientists from the World Wildlife Fund (WWF) documented the existence of at least 441 previously unknown species of animals and plants in remote parts of the Amazon basin.
A WWF report says that 258 plants, 84 fish, 58 amphibians, 22 reptiles, 18 birds, and one mammal have been discovered. The total number excludes the numerous insects and other invertebrates that were discovered along with the others.
Among the new species, a thumbnail-sized frog (Latin name: Allobates amissibiles) was found in Guyana and is already believed to be endangered. Scientists also found the vegetarian piranha (Latin name: Tometes Camunani), which can span up to 50 cm and weigh up to 4 kg.
Unlike its carnivorous relative, the fish feeds on plants that grow among the rocks in the rapids of the Trombetas River basin in northern Brazil.
The new species of orchids found includes a new ‘passion flower’ species (Latin name: Passiflora longifilamentosa), which has vivid purple petals and quirky noodle-like corona filaments that bust out of the flower's centre.
One of the most interesting discoveries was the Caqueta titi monkey (Latin name: Callicebus caquetensis) which is one of about 20 species of the titi. The specie's babies purr towards each other when they feel very content.