Overview
Comprehensive Description
Biology
Occurs in large upland rivers, usually near the bottom of the channel over sand substrate (Ref. 12693). Enters flooded fields (Ref. 12975). Frequently overlooked and rarely recorded due to its rather nondescript appearance and its occurrence along the very bottom of the river over sand substrate. Always found in flowing water and little is known about the migratory habitats of this species. All specimens examined had mouths full of sand which is strained for detritus, diatoms, algae, worms and other organisms. Taken in large numbers by trawls and haul seines in the middle Mekong along the Thai-Lao border (Ref. 12693).
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Rainboth, W.J. 1996 Fishes of the Cambodian Mekong. FAO Species Identification Field Guide for Fishery Purposes. FAO, Rome, 265 p. (Ref. 12693)
http://www.fishbase.org/references/FBRefSummary.php?id=12693&speccode=26747
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Distribution
Asia: Mekong and Chao Phraya basins.
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Kottelat, M. 2001 Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)
http://www.fishbase.org/references/FBRefSummary.php?id=43281&speccode=6261
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FishBase
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Physical Description
Morphology
Dorsal soft rays (total): 8; Analsoft rays: 8
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Kottelat, M. 1998 Fishes of the Nam Theun and Xe Bangfai basins, Laos, with diagnoses of twenty-two new species (Teleostei: Cyprinidae, Balitoridae, Cobitidae, Coiidae and Odontobutidae). Ichthyol. Explor. Freshwat. 9(1):1-128. (Ref. 27732)
http://www.fishbase.org/references/FBRefSummary.php?id=27732&speccode=26858
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Size
Max. size
18.0 cm SL (male/unsexed; (Ref. 30857))
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Baird, I.G., V. Inthaphaisy, P. Kisouvannalath, B. Phylavanh and B. Mounsouphom 1999 The fishes of southern Lao. Lao Community Fisheries and Dolphin Protection Project. Ministry of Agriculture and Forestry, Lao PDR.161 p. (Ref. 30857)
http://www.fishbase.org/references/FBRefSummary.php?id=30857&speccode=52537
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FishBase
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Diagnostic Description
Anal fin with 5 branched rays; no black spot on the anterior base of the dorsal fin, but the tip of the fin blackish (Ref. 27732). Gill rakers on first arch 30-33 (Ref. 37829). Silvery color (Ref. 37768).
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Kottelat, M. 1998 Fishes of the Nam Theun and Xe Bangfai basins, Laos, with diagnoses of twenty-two new species (Teleostei: Cyprinidae, Balitoridae, Cobitidae, Coiidae and Odontobutidae). Ichthyol. Explor. Freshwat. 9(1):1-128. (Ref. 27732)
http://www.fishbase.org/references/FBRefSummary.php?id=27732&speccode=26858
© WorldFish Center - FishBase
Source:
FishBase
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Type Information
Paratype for Xenocheilichthys gudgeri
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph
Collector(s): L. Goddi
Year Collected: 1930
Locality: Nan R., N. Siam, Thailand, Asia
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph
Collector(s): L. Goddi
Year Collected: 1930
Locality: Nan R., N. Siam, Thailand, Asia
- Paratype:
© Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
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Type for Xenocheilichthys gudgeri
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph
Collector(s): L. Gaddi
Year Collected: 1930
Locality: Nan R., N. Siam, Thailand, Asia
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph
Collector(s): L. Gaddi
Year Collected: 1930
Locality: Nan R., N. Siam, Thailand, Asia
- Type:
© Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
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Ecology
Habitat
Environment
benthopelagic; potamodromous (Ref. 51243); freshwater
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Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)
http://www.fishbase.org/references/FBRefSummary.php?id=51243&speccode=4683
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FishBase
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Migration
Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.
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Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)
http://www.fishbase.org/references/FBRefSummary.php?id=51243&speccode=4683
© WorldFish Center - FishBase
Source:
FishBase
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Conservation
Threats
Not Evaluated
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IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
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Relevance to Humans and Ecosystems
Benefits
Importance
fisheries: commercial
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Rainboth, W.J. 1996 Fishes of the Cambodian Mekong. FAO Species Identification Field Guide for Fishery Purposes. FAO, Rome, 265 p. (Ref. 12693)
http://www.fishbase.org/references/FBRefSummary.php?id=12693&speccode=26747
© WorldFish Center - FishBase
Source:
FishBase
Trusted
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