Horabagrus

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Horabagrus
Young catfish of the genus Horabagrus

Young catfish of the genus Horabagrus

Systematics
Overcohort : Clupeocephala
Cohort : Otomorpha
Sub-cohort : Ostariophysi
Order : Catfish (Siluriformes)
Family : Horabagridae
Genre : Horabagrus
Scientific name
Horabagrus
Jayaram , 1955

Horabagrus is a genus of Asian catfishwhose species occur in the southern Indian state of Kerala .

Horabagrus brachysoma occurs in rivers and in the backwaters , while Horabagrus nigricollaris is only known from the Chalakudy River and the Periyar River .

features

Horabagrus catfish are 23.5 to 45 cm long and have a stocky body with a brownish color. The head is broad and flat. Its length is 25.1 to 36.9% of the standard length . The dorsal fin, which stands far in front, is short, high and like a flag. Their back sawn sting reaches a length of 20.5 to 30.7% of the standard length. The anal fin is long, the caudal fin forked. Their tips are rounded. An adipose fin is present.

The most striking distinguishing feature of the species is the dark, whitish bordered marking on the front body, which in Horabagrus brachysoma consists of a dark spot on each side, while in Horabagrus nigricollaris it is saddle-shaped and converges across the front back. While Horabagrus brachysoma is mainly green-yellowish in color.

Systematics

Horabagrus is generally assigned to the family of the spiny catfish (Bagridae), but has recently been increasingly placed in an independent family (Horabagridae) and, according to molecular biological studies, as a relative of the Asian glass catfish (Ailiidae) in the "Big Asia" group.

Danger

The species are threatened in their population. The IUCN classifies Horabagrus brachysoma as endangered (Vulnerable) and Horabagrus nigricollaris as endangered (Endangered).

Individual evidence

  1. ↑ Rohan Pethiyagoda & Maurice Kottelat : Three new species of fishes of the genera Osteochilichthys (Cyprinidae), Travancoria (Balitoridae) and Horabagrus (Bagridae) from the Chalakudy River, Kerala, India ( Memento of the original from September 27, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 1.8 MB). J. South Asian nat. Hist., ISSN 1022-0828 . April, 1994. Volume 1, No. 1, pages 97-116. @1@ 2Template: Webachiv / IABot / www.wht.lk 
  2. ↑ Jonathan W. Armbruster: Global Catfish Biodiversity American Fisheries Society Symposium 77: 15–37 © 2011 by the American Fisheries Society PDF
  3. ↑ Ricardo Betancur-R., Richard E. Broughton, Edward O. Wiley, Kent Carpenter, J. Andrés López, Chenhong Li, Nancy I. Holcroft, Dahiana Arcila, Millicent Sanciangco, James C Cureton II, Feifei Zhang, Thaddaeus Buser, Matthew A. Campbell, Jesus A Ballesteros, Adela Roa-Varon, Stuart Willis, W. Calvin Borden, Thaine Rowley, Paulette C. Reneau, Daniel J. Hough, Guoqing Lu, Terry Grande, Gloria Arratia, Guillermo Ortí: The Tree of Life and a New Classification of Bony Fishes. PLoS Currents Tree of Life. 2013 Apr 18. Edition 1. doi: 10.1371 / currents.tol.53ba26640df0ccaee75bb165c8c26288 , PDF ( Memento of the original from October 13, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / currents.plos.org
  4. ↑ PM Abdul Muneer, A. Gopalakrishnan, Remya Shivanandan, VS Basheer, AG Ponniah: Genetic variation and phylogenetic relationship between two species of yellow catfish, Horabagrus brachysoma and H. nigricollaris (Teleostei: Horabagridae) based on RAPD and microsatellite markers. Molecular Biology Reports, April 2011, Volume 38, Issue 4, pp 2225-2232, DOI: 10.1007 / s11033-010-0352-3
  5. ↑ JP Sullivan, Lundberg JG; Hardman M: A phylogenetic analysis of the major groups of catfishes (Teleostei: Siluriformes) using rag1 and rag2 nuclear gene sequences . In: Mol Phylogenet Evol. . 41, No. 3, 2006, pp. 636-62. doi : 10.1016 / j.ympev.2006.05.044 .
  6. ↑ horabagrus brachysoma in the endangered Red List species the IUCN 2011. Posted by: Raghavan, R. & Ali, A., 2011. Accessed September 25, 2013.
  7. ↑ horabagrus nigricollaris in the endangered Red List species the IUCN 2011. Posted by: Raghavan, R. & Ali, A., 2011. Accessed September 25, 2013.

Web links

Commons : Horabagrus  - collection of images, videos and audio files