Laubuka tenella, a new species of cyprinid fish from southeastern Bangladesh and southwestern Myanmar (Teleostei, Cyprinidae, Danioninae)

Abstract

Laubuka tenella is a new species characterized by the colour pattern, consisting of short dark vertical bars anteriorly on the side, and a dark lateral band posteriorly on the side, combined with a relatively short pelvic fin and 29–30 lateral-line scales. It is separated from other Laubuka analysed by minimum 9 % uncorrected p-distance in the mitochondrial COI gene. The type series is composed of specimens from small streams in the Cox’s Bazar District in Bangladesh (the type locality), and the Thandwe River drainage in western Myanmar. Laubuka brahmaputraensis is strongly indicated to be a junior synonym of L. laubuca, the second known species of Laubuka in Bangladesh. Eustira ceylonensis, currently in the synonymy of Devario malabaricus, is a valid species of Laubuka.

Building a DNA barcode library for the freshwater fishes of Bangladesh

“…Expectations of additional taxa from that area, are low, however. The coverage of the Chittagong Division, including Karnafuli and Sangu Rivers and the Cox’s Bazar region provides for considerable new ocurrences and new species 16,18–20 , but also strong affinity to the adjacent western Rakhine in Myanmar, e.g., in the shared distribution of Laubuka tenella 19 . Most of the samples, from the Meghna, Jamuna and Padma tributaries, reflect a common fish fauna with adjacent India, the samples from the Pyain River, draining the Garo Hills, provide a distinct representation belonging to the Eastern Himalaya Region 28 .…”

Conjectures and refutations: Species diversity and phylogeny of Australoheros from coastal rivers of southern South America (Teleostei: Cichlidae)

“…Vertebrae were counted on X-radiographs and reported as precaudal+caudal; the first caudal vertebra is that with the haemal spine inserted behind the anteriormost anal-fin pterygiophores [56,57]. This convention, used by R ˇı ´čan et al [13] and R ˇı ´čan and Kullander [4] typically gave 13 precaudal vertebrae in Australoheros.…”