The emerald green tetra: a new restricted-range Hyphessobrycon (Characiformes: Characidae) from the upper rio Juruena, Chapada dos Parecis, Brazil

被引：5

作者：

Paiva Dagosta, Fernando Cesar ^{[1
]}

Seren, Thomaz Jefrey ^{[1
]}

Ferreira, Anderson ^{[1
]}

Ferreira Marinho, Manoela Maria ^{[2
]}

机构：

[1] Fundacao Univ Fed Grande Dourados, Fac Ciencias Biol & Ambientais, Rodovia Dourados Itahum,Km 12, BR-79804970 Dourados, MS, Brazil

[2] Univ Fed Paraiba, Dept Sistemat & Ecol, Cidade Univ S-N, BR-58033455 Joao Pessoa, Paraiba, Brazil

来源：

NEOTROPICAL ICHTHYOLOGY | 2022年 / 20卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Adipose fin; Amazon; Hyphessobrycon melanostichos; Tapajos; Taxonomy;

D O I：

10.1590/1982-0224-2021-0119

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

A new species of Hyphessobrycon is described from the rio Mutum, a tributary of the rio Juruena, rio Tapajos basin, Brazil. The new taxon can be distinguished from its congeners by the presence of a well-defined and relatively narrow dark midlateral stripe on body, extending from head to the middle caudal-fin rays, presence of a humeral blotch, distal profile of the anal fin falcate in males, 13-16 branched anal-fin rays (vs. 17-26), and 11 or 12 horizontal scale rows around caudal peduncle. The new species shows polymorphism regarding the presence of the adipose fin, and a discussion on this type of polymorphism across the family and its systematic implications is presented.

引用

页数：15

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