2013-11-142013-11-142010COUTINHO, Daniel Pires. Revisão taxonômica do gênero Polycentrus Müller & Troschel, 1848 (Perciformes; Polycentridae) com a descrição de três novas espécies. 2010. 57 f. Dissertação (Mestrado) - Universidade Federal do Pará, Museu Paraense Emílio Goeldi, Belém, 2010. Programa de Pós-Graduação em Zoologia.https://repositorio.ufpa.br/handle/2011/4441The genus Polycentrus Müller & Troschel is revised. Four species are recognized, P. schomburgkii is redescribed and three species are described as new. The genus diagnosis is enlarged based in meristic, morfology and colour pattern. Polycentrus n. sp. “Caxiuanã”, from Lowlands Amazon Bansin, is diagnosed by the totaly serrated interopercular edge vs. smooth or partialy serrated on the congeners. Polycentrus sp. n. “Rio Negro” from midle rio Negro, is diagnosed by the smooth lacrhymal bone vs. serrated in congeners plus a combination of non-exclusive characters. Polycentrus n. sp. “Flechal” is diagnosed by a dark opercular vertical bar vs. vertical opercular bar absent plus a combination of non-exclusive characters. A dichotomic key to species and remarks about exclusive characters is provided.porAcesso AbertoPeixePeixe-folhaPolycentrusCaracterísticas sexuaisTaxonomiaRio Negro (Bacia do Amazonas)Rio Orinoco (Bacia do Amazonas)Rio EssequiboBiogeografiaAmazônia brasileiraAmazônia venezuelanaAmazônia guianenseDissertaçãoCNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::TAXONOMIA DOS GRUPOS RECENTES