2019 DAGOSTA & DE PINNA: DISTRIBUTION & BIOGEOGRAPHICAL PATTERNS OF AMAZON FISHES 113 Taxon Species Occurrence Corydoras stenocephalus* Mamoré, Beni-Madre de Dios, Purus, Juruá, Ucayali Corydoras sterbai* Endemic – Guaporé Corydoras sychri* Endemic – Marañon Guaporé, Beni-Madre de Dios, middle-lower Madeira, Purus, Juruá, Putumayo, Corydoras trilineatus* Japurá, Amazonas main channel Corydoras tukano* Endemic – Negro Corydoras urucu* Endemic – Coari-Urucu Corydoras virginiae* Endemic – Ucayali Corydoras weitzmani* Endemic – Ucayali Corydoras xinguensis* Restricted to Xingu basin (upper Xingu, lower Xingu) Corydoras zawadzkii* Endemic – Madeira Shield Tributaries Corydoras zygatus* Juruá, Marañon-Nanay, Amazonas main channel Araguaia, Juruena, Mamoré, Guaporé, Beni-Madre de Dios, middle-lower Madeira, Purus, Ucayali, Putumayo, Japurá, Negro, Amazonas main channel, Amazonas Estuary, Parnaíba, Capim, Araguari-Macari-Amapá, Maroni-Approuague, Hoplosternum littorale Coppename-Suriname-Saramacca, Corentyne-Demerara, Essequibo, lower Orinoco, upper Orinoco, Apure, Atl. Coastal Drainages of Col. Ven., Paraná- Paraguay Lower Xingu, Mamoré, Guaporé, Beni-Madre de Dios, middle-lower Madeira, Dianema longibarbis* Purus, Tefé, Ucayali, Marañon-Nanay, Putumayo, Japurá, Jari, Amazonas main channel Dianema urostriatum* Middle-lower Madeira, Amazonas main channel Lepthoplosternum Purus, Juruá, Ucayali altamazonicum* Lepthoplosternum beni* Restricted to Madeira basin (Mamoré, Beni-Madre de Dios, middle-lower Madeira) Lepthoplosternum stellatum* Endemic – Tefé Lepthoplosternum ucamara* Ucayali, Japurá, Amazonas main channel Araguaia, lower Xingu, Tapajós, Mamoré, Guaporé, Beni-Madre de Dios, middle- lower Madeira, Madeira Shield Tributaries, Purus, Ucayali, Marañon-Nanay, Megalechis picta Putumayo, Japurá, Negro, Branco, Trombetas, Jari, Amazonas main channel, Amazonas Estuary, Capim, Coppename-Suriname-Saramacca, Essequibo, lower Orinoco, upper Orinoco Araguaia, lower Tocantins, upper Xingu, lower Xingu, Juruena, Tapajós, Mamoré, Guaporé, Beni-Madre de Dios, middle-lower Madeira, Juruá, Ucayali, Marañon- Nanay, Putumayo, Japurá, Negro, Branco, Trombetas, Amazonas main channel, Megalechis thoracata Itapicuru-Mearim, Capim, Araguari-Macari-Amapá, Maroni-Approuague, Coppename-Suriname-Saramacca, Corentyne-Demerara, Essequibo, lower Orinoco, upper Orinoco, Apure, Paraná-Paraguay Cetopsidae 26 Cetopsidium ferreirai* Urubu-Uatumã, Trombetas Upper Tocantins, Araguaia, middle-lower Madeira, Oiapoque, Maroni-Approuague, Cetopsidium orientale Coppename-Suriname-Saramacca, Corentyne-Demerara, Essequibo Cetopsidium pemon Negro, Branco, lower Orinoco, upper Orinoco Cetopsidium roae Branco, Essequibo Cetopsidium soniae* Endemic – Branco Cetopsis arcana* Restricted to Tocantins basin (upper Tocantins, Araguaia, lower Tocantins).