Gogangra

Taxobox
name = "Gogangra"
regnum = Animalia
phylum = Chordata
classis = Actinopterygii
ordo = Siluriformes
familia = Sisoridae
subfamilia = Sisorinae
genus = "Gogangra"
genus_authority = Roberts, 2001
type_species = "Pimelodus viridescens"
type_species_authority = Hamilton, 1822
subdivision_ranks = Binomial name
subdivision =
"Gogangra laevis"
Ng, 2005
"Gogangra viridescens"
(Hamilton, 1822)


synonyms = "Gangra"
Roberts & Ferraris, 1998

"Gogangra" is a genus of catfishes (order Siluriformes) of the family Sisoridae. It includes two species, "G. laevis" and "G. viridescens".cite journal|url=http://www.mapress.com/zootaxa/2006f/zt01345p096.pdf|title=Genera of the Asian Catfish Families Sisoridae and Erethistidae (Teleostei: Siluriformes)|first=Alfred W.|last=Thomson|coauthors=Page, Lawrence M.|journal=Zootaxa|volume=1345|pages=1–96|year=2006|format=PDF] 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

"G. viridescens" was previously placed in the genus "Nangra". In 1998, the genus was given the name "Gangra", but this name was already preoccupied by the genus "Gangra" of lepidopterans, so "Gogangra" was proposed as a replacement name in 2001. "G. laevis" was described in 2004.cite journal|title="Gogangra laevis", a new species of riverine catfish from Bangladesh (Teleostei: Sisoridae)|first=Heok Hee|last=Ng|journal=Ichthyol. Explor. Freshwaters|volume=16|issue=3|pages=279–286|date=September 2005]

Distribution

"Gogangra" species are distributed in the Ganges, Meghna, and Brahmaputra drainages, India and Bangladesh. "G. viridescens" is known from the Ganges and Brahmaputra drainages of India and Bangladesh. It is also reported from the Indus drainage in Pakistan, Nepal, and Bhutan. "G. laevis" is from the Yamuna and Meghna River drainages of the lower Brahmaputra River drainage in Bangladesh.

"G. viridescens" is found in the upper reaches of rivers.

Description

"Gogangra" species have a depressed head, small conical teeth in the lower jaw, the branchiostegal membranes free from isthmus, small serrations on the anterior margin of the pectoral spine (and a smooth posterior edge), no well-developed maxillary barbel membrane, the outer and inner mental barbels widely separated with the origin of inner barbels anterior to origin of outer barbels, short nasal and maxillary barbels, and palatal teeth absent. Live specimens have a viridescent or silvery supraopercular mark.

"Gogangra" species grow to about 8.0–8.5 centimetres (3.2–3.4 in) in length.FishBase species|genus=Gogangra|species=laevis|year=2007|month=July] FishBase species|genus=Gogangra|species=viridiscens|year=2007|month=July]

References