Fernando C. Jerep, Priscila Camelier & Luiz R. Malabarba

Abstract

Serrapinnus zanatae, new species, is described from the rio Jequitinhonha basin, an eastern Brazilian coastal drainage. It is diagnosed from its congeners by the following combination of characters: presence of premaxillary teeth with 7-9 cusps; 11-13 parallel spatulated ventral procurrent caudal-fin rays; incomplete lateral line; absence of a  black blotch on the dorsal fin; absence of a dark longitudinal stripe extending over the pseudotympanum to the  caudal peduncle; absence of a black spot on the posteroventral region of the abdomen; caudal-fin spot oval and  horizontally elongated not extending to dorsal and ventral margins of the caudal peduncle; sexually dimorphic  males without unbranched dorsal-, pelvic-, and anal-fin rays extended as filaments. Serrapinnus zanatae and  Aci­nocheirodon melanogramma  are the only known cheirodontines to inhabit the rio Jequitinhonha basin

Artigo completo:

https://www.researchgate.net/publication/299820921_Serrapinnus_zanatae_a_new_species_from_the_rio_Jequitinhonha_basin_Minas_Gerais_State_Brazil_Teleostei_Characidae_Cheirodontinae.

Fig. 1. Serrapinnus zanatae, MZUSP 116000, holotype, male, 36.8 mm SL; Brazil: Minas Gerais State: rio Jequitinhonha basin.

Fig. 2. Serrapinnus zanatae; MZUSP 5133, paratype male, 36.8 mm SL; clear and stained jaws showing left side of premaxilla, maxilla and dentary. Lateral view, anterior to left. Scale bar 1 mm.