Sinorhodeus microlepis, a new genus and species of bitterling from China (Teleostei: Cyprinidae: Acheilognathinae)

Abstract

A new genus and species, Sinorhodeus microlepis gen. et sp. nov., is described from a tributary of the Yangtze River, in Chongqing City, China. Sinorhodeus gen. nov. can be distinguished from four closely related genera, Paratanakia, Pseudorhodeus, Rhodeus, and Tanakia, by the following combination of characters: pharyngeal teeth 0,0,4-4,0,0, longitudinal scales 41-46, white spots on dorsal-fin rays absent, a black blotch on dorsal fin in juvenile absent, and less developed wing-like yolk sac projections in larvae. Phylogenetic analysis of one mitochondrial gene and six nuclear genes supports the establishment of the new genus.

Phylogenetic classification of extant genera of fishes of the order Cypriniformes (Teleostei: Ostariophysi)

“…The taxonomic history of Acheilognathidae was reviewed by Chang et al (2014), and the membership of genera to this family are reproduced here. More recently, a new genus of acheilognathid, Sinorhodeus, was described and is additionally included here (Li et al 2017). Li et al (2017) also questioned the diagnoses of Pararhodeus and Paratanakia, but retained them as distinct genera.…”

“…More recently, a new genus of acheilognathid, Sinorhodeus, was described and is additionally included here (Li et al 2017). Li et al (2017) also questioned the diagnoses of Pararhodeus and Paratanakia, but retained them as distinct genera.…”

Two new species of Rhodeus (Teleostei: Cyprinidae: Acheilognathinae) from the River Yangtze, China

“…Methods for measurements followed Hubbs & Lagler (2004). Counts of fin rays, vertebrae and scales followed Li et al (2017). Transverse scale series were counted between dorsal and pelvic fin origins.…”

“…Bitterlings are small freshwater fishes characterized by compressed body and unique behaviour of depositing their eggs in the gills of living freshwater mussels (Bivalvia: Unionidae and Margaritiferidae) and clams (Bivalvia: Cyrenidae) using a long ovipositor (Smith et al 2004, Nelson et al 2016, Li et al 2017. Bitterlings comprise the subfamily Acheilognathinae within the Cyprinidae, with approximately 72 species and six valid genera, viz.…”

“…Bitterlings comprise the subfamily Acheilognathinae within the Cyprinidae, with approximately 72 species and six valid genera, viz. Acheilognathus Bleeker, first author), and wing-like yolk sac projections in the larvae (Arai & Akai 1988, Li et al 2017.…”