A new species of Characidium Reinhardt (Ostariophysi: Characiformes: Crenuchidae) from headwaters of Rio Pacaás Novos, Rio Madeira basin, Rondônia, Brazil
Animals, Macaronesia, Madeira, Brazil, Ecosystem, Female, Male, Animal Distribution, Animal Structures - anatomy \& histology, Animal Structures - growth \& development, Body Size, Organ Size, Characiformes - anatomy \& histology, Characiformes - classification, Characiformes - growth \& development, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaro...