title: A new species of the leopard pleco genus Pseudacanthicus (Siluriformes: Loricariidae) from the Rio Xingu, Brazil.
abstract: The genus Pseudacanthicus comprises six valid species distributed in the Amazon basin and Caribbean coastal drainages from Guyana to French Guiana: P. serratus, P. fordii, P. histrix, P. spinosus, P. leopardus and P. pitanga. A new species of Pseudacanthicus is described from the Rio Xingu Basin, distinguished from its congeners by the following combination of characters: presence of anastomose dark blotches forming continuous zigzag bands alongside longitudinal keels; presence of dark blotches on ventral surface of body and head; all fins with orange to red colour on unbranched rays and sometimes subsequent branched rays. Brief comments on ornamental fisheries and conservation of the new species are also provided.
authors: Laboratório de Ictiologia Sistemática, Universidade Federal do Tocantins - UFT, Campus Universitário de Porto Nacional, Setor Jardim dos Ipês, Rua 3, Quadra 17, s/no, Caixa Postal 136, CEP: 77500-000, Tocantins, Brazil.
authors: C C
authors: CC
authors: Chamon
authors: Laboratório de Ictiologia de Altamira, Universidade Federal do Pará - UFPA, Campus Universitário de Altamira, Faculdade de Ciências Biológicas, 68372-040, Altamira, PA, Brazil.
authors: L M
authors: LM
authors: Sousa
mesh_terms: D063147:Animal Distribution; D000818:Animals; D001938:Brazil; D002397:Catfishes / Q000145:classification* / Q000235:genetics; D013045:Species Specificity
keywords: Amazon Basin; Neotropical; conservation; fish trade; taxonomy