A new species of amblycipitid catfish, Xiurenbagrus gigas (Teleostei: Siluriformes), from Guangxi, China

Abstract

A new species of amblycipitid catfish is described based on five specimens (88.0-164.5 mm in standard length: SL) collected from the vicinity of Du'an, Guangxi Zhuangzu Autonomous Region, southern China. The new species, Xiurenbagrus gigas, is different from all other known amblycipitid catfish, but similar to X. xiurenensis by having two patches of vomerine teeth. The new species can be distinguished from X. xiurenensis by having a larger head (head length: 27.9-34.9% vs. 21.8-26.4% SL; head depth: 14.4-17.9% vs. 12.4-14.1% SL; head width: 22.4-29.4% vs. 18.1-20.3% SL), lower adipose fin (4.6-6.0% vs. 6.5-8.3% SL), shorter distance from dorsal origin to adipose origin (25.7-32.0% vs. 32.9-38.9% SL), longer dorsal fin (21.2-24.9% vs. 16.2-19.1% SL), longer pectoral fin (18.4-20.7% vs.13.5-16.8% SL), longer pelvic fin (13.1-14.3% vs. 8.8-11.8% SL), and more gill rakers (7-9 vs. 5). Xiurenbagrus gigas, the largest known species in the family Amblycipitidae, is distributed in the Xijiang River, the longest tributary of the Zhujiang (Pearl) River basin.

A new species of torrent catfish, Liobagrus geumgangensis (Teleostei, Siluriformes, Amblycipitidae), from Korea

“…Fin spines and soft rays were counted from radiographs and bone staining, and the last two elements of the dorsal and anal fins were counted as one ray. Vertebral counts were also made from soft X-ray radiographs (HA80, HITEX), and the three components associated with the Weberian apparatus were excluded ( Chen and Lundberg 1995 ; Zhao et al 2004 ). Gill raker counts were made on the left side on the upper limb of the first arch with an additional 20 specimens to avoid damage to the holotype and paratype specimens (see Comparative material examined).…”

A new species of torrent catfish, Liobagrus hyeongsanensis (Teleostei: Siluriformes: Amblycipitidae), from Korea

“…Fin spines and soft rays were counted from radiographs, with the last two elements of the dorsal and anal fins being counted as one ray. Vertebral counts were also made from soft X-ray photographs (HA80, HITEX, Japan), with the three components associated with the Weberian apparatus being excluded (Chen & Lundberg 1995;Zhao et al 2004). Measurements were taken using a digital caliper (to the nearest 0.1 mm).…”

The complete mitochondrial genome sequence of Liobagrus mediadiposalis (Teleostei, Siluriformes, Amblycipitidae)

“…Currently, 15 recognized species in the Liobagrus fishes are distributed in China, Taiwan, Japan and Korea (Zhao et al 2004). Among them, five catfishes occur in Korea: L. andersoni, L. hyeongsanensis, L. obesus, L. somjinensis and L. mediadiposalis (Park and Kim 2010;Lee et al 2014;Kim et al 2015).…”