Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

被引：21

作者：

Carvalho, Fernando R. ^{[1
]}

Bertaco, Vinicius A. ^{[1
]}

Jerep, Fernando C. ^{[2
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Zool, Lab Ictiol, BR-91501970 Porto Alegre, RS, Brazil

[2] Pontificia Univ Catolica Rio Grande do Sul, Museu Ciencias & Tecnol, Setor Ictiol, BR-90619900 Porto Alegre, RS, Brazil

来源：

NEOTROPICAL ICHTHYOLOGY | 2010年 / 8卷 / 02期

关键词：

Ostariophysi; Chapada dos Veadeiros; Neotropical fish; Tocantins-Araguaia basin; Caudal-fin scales; TELEOSTEI; AMAZON;

D O I：

10.1590/S1679-62252010000200002

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

Hemigrammus tocantinsi is described from the upper rio Tocantins basin, Chapada dos Veadeiros, Goias State, Central Brazil. The new species differs from its congeners by the presence of 15-17 branched anal-fin rays, longitudinal stripe relatively narrow anteriorly and wider posteriorly, and one or two maxillary teeth. Sexual dimorphism of the new species is characterized by differences among the color in life, adipose-fin origin, body measurements, in addition to presence of bony hooks in the anal and pelvic fins of males.

引用

页码：247 / 254

页数：8

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