Xiurenbagrus

Taxobox
name = "Xiurenbagrus"
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Siluriformes
familia = Amblycipitidae
genus = "Xiurenbagrus"
genus_authority = Chen & Lundberg, 1995
type_species = "Liobagrus xiurenensis"
type_species_authority = Yue, 1981
subdivision_ranks = Binomial name
subdivision =
"Xiurenbagrus gigas"
Zhao, Lan & Zhang, 2004
"Xiurenbagrus xiurenensis"
(Yue, 1981)

"Xiurenbagrus" is a genus of catfishes (order Siluriformes) of the family Amblycipitidae. It includes two species, "X. gigas" and "X. xiurenensis".cite journal|url=http://silurus.acnatsci.org/ACSI/library/biblios/2007_Ferraris_Catfish_Checklist.pdf|title=Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types|first=Carl J., Jr.|last=Ferraris|journal=Zootaxa|volume=1418|pages=1–628|year=2007|format=PDF]

Taxonomy

"X. xiurenensis" was first described in 1981 as "Liobagrus xiurenensis". However, it was realized that "Liobagrus" would not be monophyletic with the inclusion of this species, so "Xiurenbagrus" was erected. The genera "Amblyceps" and "Liobagrus" are sister group pair that is, in turn, sister to "Xiurenbagrus". "X. gigas" was described in 2004.

Distribution

"X. gigas" is known only from the Hongshuihe River which belongs to the Xijiang River, the largest tributary of the Pearl River basin in China.cite journal|title=A new species of amblycipitid catfish, "Xiurenbagrus gigas" (Teleostei: Siluriformes), from Guangxi, China|first=Yahui|last=Zhao|coauthors=Lan, Jiahu; Zhang, Chunguang|journal=Ichthyological Research|year=2004|volume=51|pages=228–232|doi=10.1007/s10228-004-0220-z] "X. xiurenensis" inhabits the Pearl River, northward to Lijiang River near Guilin, Guangxi, southward to Zuojiang River near Longzhou, Guangxi.

Description

"Xiurenbagrus" species have a ventral mouth. The fin margins are pale. The adipose fin is not confluent with the caudal fin and has a free lobe.cite journal|title="Xiurenbagrus", a New Genus of Amblycipitid Catfishes (Teleostei: Siluriformes), and Phylogenetic Relationships among the Genera of Amblycipitidae|first=Xiaoping|last=Chen|coauthors=Lundberg, John G.|journal=Copeia|year=1995|issue=4|pages=780–800|doi=10.2307/1447027|volume=1995] "X. gigas" is the largest species of amblycipitid and grows to about 16.5 centimetres (6.5 in) SL. "X. xiurenensis" is a small- to medium-sized amblycipitid, growing to about 10.7 cm (4.2 in) SL.

Ecology

Little is known about the ecology of these fishes. "X. xiurenensis" is benthic and inhabits streams in the Nanling mountain range. The stomach contents have been studied to contain parts of arthropods.

References