Produção Nacional
The emerald green tetra: a new restricted-range Hyphessobrycon (Characiformes: Characidae) from the upper rio Juruena, Chapada dos Parecis, Brazil
2022; Sociedade Brasileira de Ictiologia; Volume: 20; Issue: 1 Linguagem: Inglês
10.1590/1982-0224-2021-0119
ISSN1982-0224
AutoresFernando César Paiva Dagosta, Thomaz Jefrey Seren, Anderson Ferreira, Manoela M. F. Marinho,
Tópico(s)Fish Ecology and Management Studies
ResumoABSTRACT A new species of Hyphessobrycon is described from the rio Mutum, a tributary of the rio Juruena, rio Tapajós 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.
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