Arius sagor [Status Unaccepted]   (Hamilton,  1822) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Actinopterygii
Order:Siluriformes
Family:Ariidae

Image copyrights: Digitalarchives.tw

Description
Size: Maximum 45 cm; common 20 to 40 cm

Color: Back and sides dark grey/blue, underside milky white; usually silvery white or blue/green cross-bands on back and sides. All fins dusky black, only soft part of dorsal fin lighter. Maxillary barbels wholly blackish; outer half or tip of other barbels blackish.

Body elongate. Head broad and much depressed. 3 pairs of barbels. The maxillary barbels reaching to the middle of pectoral fins. Supra-occipital process on head large, broader than longer. Basal plate before dorsal fin distinctly large and butterfly-shaped. Dorsal and pectoral fins with spine, the tips of spines with a filamentous prolongation.
Bones of upper surface of head, and triangular humeral process strongly granulated, granules partly arranged in radiating or concentric lines, they extend even on the foremost part of the lateral line. Occipital process forming a subcircular plate, broader than long, with a median keel, touching the strongly granulated, very broad butterfly-shaped basal bone of dorsal spine, the form of which is changing and its size increasing with age, as is also the case with the occipital process, which in youth is short and nearly triangular. Dorsal profile sloping down in a straight line to the broad, bluntly rounded, prominent snout. Eye with a free orbital margin, about twice in snout, which goes about twice in postorbital part of head. Maxillary barbels reaching on middle of pectorals or farther, mandibulary barbels somewhat farther than base of pectorals, mental ones nearly to hind margin of gill membrane. Height of dorsal about equal to head without snout, the osseous part of its strong spine, which has a filamentous prolongation, is granulated at its front border, scarcely serrated behind and equal to postorbital part of head or somewhat longer. The base of adipose fin nearly equal to that of the dorsal. About 3 times in its distance from last named, situated above the middle of the anal fin, the middle rays of which are the highest and about equal to the length of its base. Ventrals extending to the origin or on anal. Pectorals falciform, somewhat shorter than head, their strong spine obtusely serrated along both edges, much longer than dorsal spine. Axillary pore not very distinct. Villiform teeth in a narrow, slightly arcuated band in the jaws, on the palate in two pairs of posteriorly rounded patches, the outer patch is about twice as large as the inner one, both are confluent or separated by a very narrow interspace. 9 flattened, stiff gillrakers, the foremost the shortest, the longest much less than ½ length of branchial filaments and 2/3 of eye.


Synonym (s)
Pimelodus sagor Hamilton-Buchanan, 1822
Bagrus sondaicus Cuvier and Valenciennes, 1839
Bagrus javensis Cuvier and Valenciennes, 1839
Bagrus sagor Cuvier and Valenciennes, 1839
Bagrus sondaicus Cantor, 1850
Hexanematichthys sundaicus Bleeker, 1858
Arius sagor Gunther, 1864
Arius sagor Kner, 1867
Arius sagor Day, 1888
Galeichthys sondaicus Fowler, 1905
Arius sagor Seale, 1910
Tachysurus sagor (Hamilton - Buchanan, 1822)
Arius sagor Day, 1877
Tachysurus sagor Misra, 1976

Common Name (s)
• Sagor Catfish (English)
• Shingara (Marathi)
• Bill Shede (Marathi)
• Shingala
Economic Importance and Threats
Importance:  Commercial
(Fisheries)

Ecology
Habitat:  Estuarine, Coastal
Trophic Level:  Consumer
Prey:  Invertebrates and small fishes

Biogeography


• Bay of Bengal (Lat: 15) (Long: 90) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Maharashtra, Rajivada Bander INDIA
• Maharashtra, Ratnagiri INDIA
• INDIA
• West Bengal (Lat: 21.45) (Long: 87.9) INDIA

Literature Source(s)
  • Singh, DF and Yazdani, GM (1993) Ichthyofauna of Konkan region of Maharashtra (India) Records of the Zoological Survey of India. Occasional paper no 145 ZSI, Calcutta 46 Available at - NIO, Goa
  • (1995) Hugali Matla estuary: West Bengal ZSI, Kolkatta 1-542
  • Chatterjee, TK; Talukdar, RS and Mukherjee, AK (2000) Fish and fisheries of Digha coast of West Bengal Occasional paper no 188 Records of the Zoological Survey of India 31778 Available at - NCL, Pune
  • Jayaram, KC (1982) Aid to the identification of the siluroid fishes of India, Burma, Sri Lanka, Pakistan and Bangladesh: Ariidae and Plotosidae Occasional paper no 37 Records of the Zoological Survey of India ZSI 14977 Available at - NCL, Pune
  • Talwar, PK and Kacker, RK (1984) Commercial sea fishes of India ZSI, Calcutta 997 pp Available at - NIO, Goa
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Hajisamae, S; Chou, LM and Ibrahim, S (2004) Feeding habits and trophic relationships of fishes utilizing an impacted coastal habitat, Singapore Hydrobiologia 520 61-71 Available at - Zoological Records
  • Jaafar, Z; Hajisamae, S; Chou, LM and Yatiman, Y (2004) Community structure of coastal fishes in relation to heavily impacted human modified habitats Hydrobiologia 511 113-123 Available at - Zoological Records
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Weber, M; Beaufort, LF (1965) The fishes of the Indo-Australian Archipelago E.J. Brill, Leiden, Holland 2 404 pp Available at - NIO, Goa
  • Digitalarchives.tw Available at - http://catalog.digitalarchives.tw/dacs5/System/Main.jsp
  • Fischer, W and Bianchi, G (Eds.) (1984) FAO species identification sheets for fishery purposes. Western Indian Ocean; (Fishing area 51). FAO, Rome 1 Available at - http://www.fao.org/docrep/009/ad468e/ad468e00.HTM#Contents
  • Fischer, W and Whitehead, PJP (1974) FAO species identification sheets for fishery purposes. Eastern Indian Ocean - Fishing Area 57 and Western Central Pacific - Fishing Area 71 FAO, Rome 1 Available at - http://www.fao.org/docrep/009/e9163e/e9163e00.htm
  • Das, P; De, SP; Bhowmik, RM; Pandit, IK; Sengupta, R; Nandi, AC; Thakurta, SC and Saha, S (2007) Piscine diversity of West Bengal Fishing chimes 27(5) 15-28 Available at - NIO, Goa

Page last updated on:2012-01-06

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