Request PDF | Identification and characterization of SSRs in Clarias batrachus and their application in population study | Magur Clarias batrachus … Common/local names English: Magur, Walking catfish and Philippine catfish Bangladesh: Magur (মাগুর) and Jiol (জিওল)

Treelike respiratory structures extending above the gill chambers enable it to breathe.

Ghost Knifefish (Notopterus notopterus) Indochina featherback (Chitala blanci) Spotted Featherback (Chitala chitala) Other Fish Species. batrachus from Sundaland have been misidentified as Clarias batrachus from Java. Scientific Name: Clarias batrachus.

Even Clarias batrachus, the 'aquarium friendly' species we occasionally see, will officially reach more than 1m/3.3’ in length. Genus: Clarias Species: C. batrachus. The head is flat and wide and the body tapers to the tail.

Species Clarias batrachus Clarias catfish.

Normally, the fecundity of Clarias batrachus is 3000 to 4000. Walking Catfish (Clarias batrachus) Featherback / Knifefish. Several countries report adverse ecological impact after introduction. It’s also been claimed that a fisherman once caught one weighing 66kg/146lb. Clarias batrachus: information (1) Species Clarias batu. Introduced elsewhere.

Identification: Walking catfish, which are scale-less, are typically a uniform shade of gray or gray-brown with many small white spots along their sides.

Identification of these species in the field is sometimes problematic and there is some doubt on the correctness of their specific identification.

Clarias batrachus (Clarias magur), an Indian catfish species, is endemic to the Indian subcontinent and is distributed in Ganga and Brahmaputra river basins in northern and north-eastern India, Nepal, Bhutan and Bangladesh (Ng and Kottelat, 2008).It has been included in the threatened species list due to reduction in natural population size (Vishwanath, 2011). Synonyms Clarias assamensis Day, 1877 Clarias punctatus Valenciennes, 1840 Silurus batrachus Linneaeus, 1758. It was thought that they would out-compete native catfish species and spread rapidly. Similarly to other species, China has adopted it within its rice-fields and is currently among the main producing countries, even though this species does not appear separately in its production statistics. These reproductive migrations typically take place shortly after the onset of the rainy season(s). Some escaped in North America in … The world despises feral Clarias. Clarias gariepinus has also been introduced into most other countries in Africa, as well as several in Europe, Asia and South America. Clarias batrachus is distinguished from all Asian congeners in having a narrow snout, in dorsal view with straight lateral outline and convex anteriorly . Barramundi (Lates calcarifer) Climbing perch (Anabas testudineus) Giant Freshwater Stingray (Himantura chaophraya) Giant Gourami (Osphronemus goramy) Walking catfish, Species (Clarias batrachus) of Asian and African catfish that can progress remarkable distances over dry land. This hasn’t really been the case, there’s no physical evidence that these catfish are detrimental to native fish species. The pair manifests the 'spawning embrace' which is widely observed in other catfish species (Ref. J. Paul Grobler, Sinobongo Ndyogolo, James Barasa, Romulus Abila, Hesmari Bindeman, and Andre F.J. Schlemmer "Genetic Identification of Invasive Walking Catfish, Clarias batrachus, Intermingled with African Catfish, C. gariepinus, in South Africa," African Journal of … Clarias aff. Introduction. The temperature of water suitable for spawning is 26°C to 29°C, pH should be 7.0, Ammonia 0, … It can be further distinguished from all Asian congeners in having a unique combination of the following characters: 63–74 dorsal-fin rays (vs. 82–108 in C. nigricans, C. It uses its pectoral-fin spines as anchors to prevent jackknifing as its body musculature produces snakelike movements. 1. Clarias gariepinus undertake lateral migrations from the larger water bodies, in which they feed and mature at about the age of 12 months, to temporarily flooded marginal areas in order to breed. As part ofan overall systematic revision ofthe south-east Asian Clarias species, this paper presents preliminary results of the morphometric analysis of Clarias specimens collected in Vietnam. The final gonadal maturation is associated with rising water levels. 33313). Clarias batrachus are very strong reproducers and it was a big concern when they were first released. Although more than 100 different species of the Genus Clarias have been described in Africa, a recent systematic revision based on morphological, anatomical and biographical studies has been carried out by Teugels (1982a, 1982b, 1984), who recognized 32 valid species. batrachus from Indochina and Clarias aff. The eggs of Clarias batrachus are demersal, spherical and small in size varying in diameter from1.5-2.00 mm. Species Clarias brachysoma Walking catfish.



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