Clarias batrachus   (Linnaeus,  1758) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Lovshin, L.

Size (male): 47.0 cm TL

Max. published weight: 1.19 kg

Body compressed posteriorly. Upper jaw a little projecting. Spine of pectoral fins rough on its outer edge and serrated on its inner edge. Occipital process more or less triangular, its length about 2 time in its width; distance between dorsal and occipital process 4-5.5 times in distance from tip of snout to end of occipital process. Genital papilla in males is elongated and pointed. Dorsal spines(total): 0; dorsal soft rays (total): 60-76; anal spines: 0; anal soft rays: 47-58.

Remarks: Stray juveniles only

Dioecious, external fertilization, guarders, nesters. The pair manifests the 'spawning embrace' which is widely observed in other catfish species. The pair gently nudge each other in the genital region and flick their dorsal fins; male wraps his body around the female, then the female releases a stream of adhesive eggs into the nest. In southeast Asia, spawning period is during the rainy season, when rivers rise and fish are able to excavate nests in submerged mud banks and dikes of flooded rice fields.

Synonym (s)
Clarias assamensis Day, 1877
Clarias batrachus Valenciennes, 1840
Clarias jagur Gunther, 1864
Clarias magur Valenciennes, 1840
Macropteronotus jagur Hamilton, 1822
Macropteronotus magur Hamilton, 1822
Silurus anguillaris Russel, 1803
Silurus batrachus Linnaeus, 1758
Clarias assamensis Day, 1877
(Junior synonym)
Clarias batrachus (Linnaeus, 1758)
(Senior synonym)
Clarias jagur (Hamilton, 1822)
(Junior synonym)
Clarias magur (Hamilton, 1822)
(Ambiguous synonym )
Clarias punctatus Valenciennes, 1840
(Junior synonym)
Macropteronotus jagur Hamilton, 1822
(Junior synonym)
Macropteronotus magur Hamilton, 1822
(Ambiguous synonym )
Silurus batrachus Linnaeus, 1758
(Senior synonym)
Clarias betrachus (Linnaeus, 1758)
Clarias jagur (Hamilton, 1822)
Clarias magur (Hamilton, 1822)
Clarias punctatus Valenciennes, 1840

Common Name (s)
• Mah Gur (Assamese )
• Walking Catfish (English)
• Toymans Spotted Catfish (English)
• Freshwater Catfish (English)
• Clarias Catfish (English)
• Albino Walking Fish (English)
• Air Breathing Catfish (English)
• Kha Magoor(Khasi)
• Jagur
• Magur (Assamese )
• Mahgur (Assamese)
• Magur (Bengali)
• Mahgur (Bengali)
• Magur (English)
• Mangri (Hindi)
• Mangur (Hindi)
• Manguri (Hindi)
• Wagur (Hindi)
• Halimeena (Kannada)
• Khamagur (Khasi)
• Yerivahlay (Malayalam)
• Mazhu (Malayalam)
• Musi (Malayalam)
• Muzhi (Malayalam)
• Valay (Malayalam)
• Yeri (Malayalam)
• Ngakra (Manipuri)
• Nya-hara (Manipuri)
• Magur (Marathi)
• Magurah (Oriya)
• Maguro (Oriya)
• Falli (Punjabi)
• Kug-ga (Punjabi)
• Kugga (Punjabi)
• Masarai (Tamil)
• Karupputheli (Tamil)
• Marpoo (Telugu)
• Marpulu (Telugu)
• Magur
• Ngakra
Economic Importance and Threats
Importance:  Commercial, Dangers
(Aquaculture, aquarium

Potential pest)
Cultured:  Yes

Habitat:  Demersal, Estuarine
Trophic Level:  Secondary Consumer
Prey:  Terrestrial insects, bony fish, benthic crustaceans, debris, finfish, benthic algae, shrimps and prawns, mollusk, annelids and non-annelids


• Andaman and Nicobar Islands, Andaman Islands (Lat: 10) (Long: 93) INDIA
• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• Orissa, Chilika Lake INDIA (Record: 1985-1987)
• West Bengal, Digha Ghole (Lat: 21.61) (Long: 87.53) INDIA (Record: 1981-1982)
• Andaman and Nicobar Islands INDIA

Literature Source(s)
  • Rama Rao, KV (1995) Pisces Wetland ecosystem series 1: Fauna of Chilika lake ZSI, Calcutta 483-506 Available at - NIO, Goa
  • Menon, AGK (1999) Checklist: Fresh water fishes of India Occasional paper no. 175 ZSI, Kolkata 366 pp Available at - NCL, Pune
  • Rao, DV; Devi, K and Rajan, PT (2000) An account of ichthyofauna of Andaman and Nicobar Islands, Bay of Bengal Occasional paper no 178 Records of the Zoological Survey of India ZSI, Calcutta 1-434 Available at - NCL, Pune
  • Gupta, PC and Singh, RB (1985) Two new species of digenetic trematodes of fishes in India Pakistan Journal of Zoology 14(4) 329-334 Available at - NCL, Pune (ASFA Records 3)
  • Devi, K and Rao, DV (2003) Poisonous and venomous fishes of Andaman Islands, Bay of Bengal Occasional paper no 211 Records of The Zoolgical Survey of India ZSI, Calcutta 25934 Available at - NCL, Pune
  • Pandian, TJ and Koteeswaran, R (1999) Natural occurrence of monoploids and polyploids in the Indian catfish, Heteropneustes fossilis Current Science Indian Academy of Sciences 76(8) 1134-1137 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
  • (2001) Sanctuary Asia natural history species: Species checklist: Reptiles Sanctuary Asia Sanctuary Magazine Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at -
  • Manna, B and Goswami, BCB (1985) A check-list of marine and estuarine fishes of Digha, West Bengal, India Mahasagar- Bulletin of the National Institute of Oceanography NIO, Goa 18(4) 489-499 Available at -
  • Talwar, PK (1990) Fishes of Andaman and Nicobar Islands: A synoptic survey Journal of the Andaman Science Association Andaman Science Association, Port Blair 6(2) 71-102 Available at - NIO,Goa
  • Job, TJ; David, A; Das, KN (1955) Fish and fisheries of the Mahanadi in relation to the Hirakud dam Indian Journal of Fisheries The Editorial Committee, India Journal of Fisheries for the Minister of Food and Agriculture Government of India 2(1) 1-36 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
  • 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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