Ohara Willian M, Teixeira Tulio F, Albornoz-Garzón Juan G, Mirande J Marcos, Lima Flávio C T
Universidade Federal de Rondônia, Departamento de Engenharia de Pesca, rua da Paz, 4376, Lino Alves Teixeira, 76916-000, Presidente Medici, RO, Brazil..
Zootaxa. 2019 Dec 23;4712(4):zootaxa.4712.4.5. doi: 10.11646/zootaxa.4712.4.5.
A new species from rapids of Rio Aripuanã, Rio Madeira basin, in Brazil, and from the same type of habitat in the upper Rio Negro and upper Rio Orinoco basins in Brazil, Colombia, and Venezuela is described and assigned to the genus Hyphessobrycon. The new species presents an interrupted lateral line plus a single perforated scale on caudal peduncle and a small dark blotch on dorsal procurrent caudal-fin rays, features not found in the other species of Hyphessobrycon. Comments on the phylogenetic position of the new species, its rheophilic habits, and the biogeographic implications of its distribution are presented.
描述了一种来自巴西马德拉河盆地阿里普阿南河急流中的新物种，以及来自巴西、哥伦比亚和委内瑞拉内格罗河上游和奥里诺科河上游相同类型栖息地的新物种，并将其归入魮脂鲤属。该新物种具有中断的侧线，尾柄上有一枚单一的穿孔鳞片，尾鳍背缘前向鳍条上有一个小的黑斑，这些特征在魮脂鲤属的其他物种中未发现。文中还对新物种的系统发育位置、喜流习性及其分布的生物地理意义进行了评论。
