Wallago attu   (Bloch & Schneider,  1801) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Warren, T.

Size: 50 - 240 cm TL

Color: Blackish above, margaritaceous below. Fins hyaline or more or less dusky.

Head broad, snout depressed. Body elongate, strongly compressed. Mouth very deeply cleft, its corner reaching far behind eyes. Teeth in jaws set in wide bands; vomerine teeth in two small patches. Barbels two pairs; maxillary barbels extending to anterior margin posterior of anal fin, mandibulary barbels to angle of mouth. Eyes small, with a free orbital margin. Dorsal fin small, anal fin very long. Mandibular barbel longer than pelvic fin; 24-30 gill rakers on the first arch. Eye in front of vertical through corner of mouth. Dorsal soft rays (total): 5; Anal soft rays: 77 - 97. Head broad, snout depressed. Body elongate, strongly compressed.

Dioecious, external fertilization, oviparous, guarders, nesters.

Synonym (s)
Callichrous macrostomus Swainson, 1839
Pinniwallago kanpurensis (non Gupta, Jayaram & Hajela, 1981)
(Misapplied name)
Schilbe boalis Sykes, 1841
Silurus( Callichorus )boalis Hamilton-Buchanan, 1822
Silurus asotus Valenciennes, 1839
Silurus attu Bloch & Schneider, 1801
(Senior synonym)
Silurus attu Bloch and Schneider, 1801
Silurus boalis Hamilton, 1822
(Ambiguous synonym)
Silurus wallago Valenciennes, 1839
Wallago asotus Bleeker, 1852
Wallago russelli Bleeker, 1853
Wallagonia attu (Bloch & Schneider, 1801)
(Senior synonym)
Callichrous macrostomus (Swainson, 1839)
(Junior synonym)
Silurus macrostomus Swainson, 1839
(Junior synonym)
Silurus muelleri Bleeker, 1846
(Junior synonym)
Silurus wallago Valenciennes, 1840
(Junior synonym)
Silurus wallagoo Valenciennes, 1840
(Junior synonym)
Wallago attu valeya Deraniyagala, 1953
(Junior synonym)
Wallago russellii Bleeker, 1854
(Junior synonym)
Wallagu attu (Bloch & Schneider, 1801)
Wallagonia athu (Bloch & Schneider, 1801)
Wallago russelli Bleeker, 1854
Silurus mulleri Bleeker, 1846

Common Name (s)
• Barali (Assamese)
• The Wallago (English)
• Maha Valaya (Sinhala)
• Valaya (Sinhala)
• Boal (English)
• Parhin (Assamese)
• Poil (Assamese)
• Sareng (Assamese)
• Barali (Bengali)
• Bayali (Bengali)
• Boyali (Bengali)
• Koyali (Bengali)
• Padin (Gujarati)
• Boalee (Hindi)
• Barwari (Hindi)
• Boyari (Hindi)
• Paran (Hindi)
• Valai (Hindi)
• Wallah (Hindi)
• Bahle (Kannada)
• Baalae (Kannada)
• Balae (Kannada)
• Chate (Kannada)
• Godlay (Kannada)
• Parhin (Khasi)
• Wallah (Malayalam)
• Pozha wallah (Malayalam)
• Attu-valai (Malayalam)
• Attuvaala (Malayalam)
• Barali (Manipuri)
• Baloo (Marathi)
• Pahree (Marathi)
• Pari (Marathi)
• Pattan (Marathi)
• Purram (Marathi)
• Shivada (Marathi)
• Valashivda (Marathi)
• Warshoorah (Marathi)
• Padni (Nepali)
• Bohari (Nepali)
• Ballai (Oriya)
• Boabe (Oriya)
• Boallee (Oriya)
• Mully (Punjabi)
• Valai (Tamil)
• Wallah (Tamil)
• Valuga (Telugu)
• Walagah (Telugu)
• Wallagah (Telugu)
• Athiyala (Telugu)
• Valaga (Telugu)
• Sareng
• Parhen
• Barari
Economic Importance and Threats
Importance:  Commercial, Dangers
(Fisheries, gamefish

Destructive to other more valuable food-fishes. Bites strongly if handled, with its huge mouth, formidable jaws, and band of conical teeth. )
Threats:  Anthropogenic
(Threatened due to over harvesting)

Habitat:  Demersal, Estuarine
Trophic Level:  Secondary Consumer
Prey:  Juveniles feed mainly on insects. Adults feed on smaller fish, crustaceans, and mollusks.


• Orissa, Chilika Lake INDIA
• Orissa, Chilika Lake INDIA (Record: 1948-1950)
• Bihar, Dighwara INDIA (Record: 1952)
• West Bengal INDIA

Literature Source(s)
  • Menon, AGK (1999) Checklist: Fresh water fishes of India Occasional paper no. 175 ZSI, Kolkata 366 pp Available at - NCL, Pune
  • Bisht, D; Bisht, GS and Khulbe, RD (2000) Fusarium: A new threat to fish population in reservoirs of Kumaun, India Current Science Indian Academy of Sciences 78(10) 1241-1242 Available at - NCL, Pune
  • Karmakar, AK and Datta, AK (1988) On a collection of fish from Bastar district, Madhya Pradesh Occasional paper no 98 Records of the Zoological Survey of India ZSI, Kolkata 18264 Available at - NCL, Pune
  • Rama Rao, KV (1995) Pisces Wetland ecosystem series 1: Fauna of Chilika lake ZSI, Calcutta 483-506 Available at - NIO, Goa
  • Nandi, NC; Das, SR; Bhuinya, S and Dasgupta, JM (1993) Wetland faunal resources of West Bengal, I., north and south 24-Parganas districts Occasional paper no 150 Records of the Zoological Survey of India ZSI 18264
  • Fauna of Tripura (part-1) vertebrates ZSI, Kolkata 365 pp
  • (2001) Fauna of Godavari estuary, Andhra Pradesh Estuarine ecosystem series 4 ZSI, Kolkata 1-166 Available at - ZSI, Pune
  • (2001) Sanctuary Asia natural history species: Species checklist: Reptiles Sanctuary Asia Sanctuary Magazine Available at - http://www.sanctuaryasia.com/resources/speciechklist/reptile.php
  • 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
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • Jones, S and Sujansingani, KH (1954) Fish and fisheries of the Chilka Lake with statistics of fish catches for the years 1948-1950 Indian Journal of Fisheries Indian Journal of Fisheries for the Indian Council of Agricultural Research 1 (1-2) 256-344 Available at - http://eprints.cmfri.org.in/1634/2/Article_15.pdf
  • Karamchandani, SJ (1957) On the Occurrence of Association of carp fry in the fry-collection nets and the destructive role played by predatory fish Indian Journal of Fisheries The Editorial Committee, India Journal of Fisheries for the Minister of Food and Agriculture Government of India 4(1) 46-61 Available at - NIO,Goa
  • Kosygin, L; Devi, LS; Dhamendra, H (2010) Fish and Fisheries of Iril river, Manipur, with a note on conservation strategies for threatened species Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(2) 85-92 Available at - NIO,Goa
  • Mishra, SS; Chakrabarty, M; Kar, S and Gopi, KC (2010) Catfish diversity of west Bengal, India Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(2) 189-194 Available at - NIO,Goa
  • Sarkar, UK; Kapoor, D; Paul, SK; Pathar, Ak; Basheer, VS; Deepak, PK; Srivastava, SM and Tyagi, LK (2007) Fish Biodiversity in the water bodies of samaspur bird sanctuary Uttar Pradesh: towards developing a freshwater aquatic sanctuary Journal of the Bombay Natural History Society 104(1) 51-54 Available at - NIO, Goa

Page last updated on:2012-02-01

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