Nannacara aureocephalus - Nannacara aureocephalus. Río Oyapock, Brasil. Barra escala: 1 cm. Melo BF, Benine RC, Britzke R, Gama CS, Oliveira C (2016) An inventory of coastal freshwater fishes from Amapá highlighting the occurrence of eight new records for Brazil. ZooKeys 606: 127-140. doi: 10.3897/zookeys.606.9297 © Melo BF, Benine RC, Britzke R, Gama CS, Oliveira C - CC BY 4.0 - Wikimedia Commons
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