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Plancia ëd Hemibagrus filamentus (Fang & Chaux 1949)
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Hemibagrus filamentus (Fang & Chaux 1949)

Diagnostic Description ( Anglèis )

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Can be differentiated from its congeners by a unique combination of the following characters: head length 31.0-34.3% SL; dorsal to adipose distance 7.3-10.9% SL; length of dorsal-fin 27.3-30.8% SL; post-adipose distance 14.7-16.2% SL; interorbital distance 28.1-31.1% HL; presence of filamentous extensions on the first three dorsal-fin rays in adults (Ref. 38441). Depressed dorsal fin reaching adipose fin; adipose fin same color as body; body and fins a uniform dark brown; crenulate ridge along anterior edge of pectoral spine; 8 branched anal-fin rays (Ref. 12693). Elongated upper caudal lobe ending in a filament (Ref. 43281).
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Morphology ( Anglèis )

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Dorsal spines (total): 1; Dorsal soft rays (total): 7; Analsoft rays: 12 - 14; Vertebrae: 44 - 46
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Biology ( Anglèis )

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Inhabits slowly flowing or standing waters of the lower Mekong. Moves into flooded forests during periods of high water levels. Feeds on crustaceans and fishes. Marketed fresh (Ref. 12693).
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Importance ( Anglèis )

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fisheries: commercial
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Hemibagrus filamentus ( Anglèis )

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Hemibagrus filamentus is a species of catfish endemic to Cambodia, Laos and Thailand, known only from Mekong River. It is found in still waters and moving waters although it also been found in large rivers. It feeds on fishes, crustaceans, aquatic insect larvae and plant material. When migrating, it moves into smaller tributaries and in flooded areas with rising water level;[2] they spawn from June to July. It is listed as a junior synonym of H. nemurus and research is often confused with H. nemurus. It is fished for food by small-scale commercial fisheries but exact threats are unknown and nothing else is known about this fish thus the Data Deficient listing.

References

  1. ^ Ng, H.H. 2012. Hemibagrus filamentus. The IUCN Red List of Threatened Species. Version 2015.1. . Downloaded on 8 June 2015.
  2. ^ Estimation of Annual Yield of Fish by Guild in the Lower Mekong Basin. WorldFish. 2010. p. 18. Retrieved June 8, 2015.

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Hemibagrus filamentus: Brief Summary ( Anglèis )

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Hemibagrus filamentus is a species of catfish endemic to Cambodia, Laos and Thailand, known only from Mekong River. It is found in still waters and moving waters although it also been found in large rivers. It feeds on fishes, crustaceans, aquatic insect larvae and plant material. When migrating, it moves into smaller tributaries and in flooded areas with rising water level; they spawn from June to July. It is listed as a junior synonym of H. nemurus and research is often confused with H. nemurus. It is fished for food by small-scale commercial fisheries but exact threats are unknown and nothing else is known about this fish thus the Data Deficient listing.

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