FB-58232 http://www.fishbase.org/summary/SpeciesSummary.php?id=58232 Animalia Chordata Teleostei Blenniiformes Dactyloscopidae Dactyloscopus Dactyloscopus byersorum Dawson, 1969 2001-07-22 2021-01-24 Anonymous0 Fish collection database of the National Museum of Natural History (Smithsonian Institution). Smithsonian Institution-Division of Fishes. (Ref. 38732) Ng, H.H. and M. Kottelat0 Helicophagus leptorhynchus, a new species of molluscivorous catfish from Indochina (Teleostei: Pangasiidae). Raffles Bull. Zoll. 48(1):55-58. (Ref. 39387) Kottelat, M.0 Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281) IGFA0 Database of IGFA angling records until 2009. IGFA, Fort Lauderdale, USA. (Ref. 83530) Machacek, H. (ed.)0 World Records Freshwater Fishing. www.fishing-worldrecords.com, 8 December 2014. (Ref. 99764) Machacek, H. (ed.)0 World Records Freshwater Fishing: News, April 2017 Edition. www.fishing-worldrecords.com, newsletter April 2017 edition. (Ref. 114850) FB-GeneralDescr-58238 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2001-07-25 00:00:00 2024-03-27 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58238 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size Occurs in permanent river channels and does not move into flooded areas. Migrates upstream when water levels begin to rise at the beginning of the flood season and moves downstream as the water clears at the end of the flood season. Feeds predominantly on bivalves. Ng, H.H. and M. Kottelat 2000 Helicophagus leptorhynchus, a new species of molluscivorous catfish from Indochina (Teleostei: Pangasiidae). Raffles Bull. Zoll. 48(1):55-58. (Ref. 39387) FB-DiagnosticDescr-58238 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2001-07-25 00:00:00 2002-10-09 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58238 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats Can be differentiated from all its congeners by the following combination of characters: length of anal-fin base 34.5-38.2% SL, length of caudal peduncle 12.9-15.3% SL, head length 20.8-22.8% SL, eye diameter 16.1-21.2% HL, 9-12 gill rakers on the first branchial arch (Ref. 39387). Snout relatively elongate, conical in dorsal view; mouth narrow, with 20-25 times in SL; posterior nostril midway between anterior nostril and eye (Ref. 43281). Ng, H.H. and M. Kottelat 2000 Helicophagus leptorhynchus, a new species of molluscivorous catfish from Indochina (Teleostei: Pangasiidae). Raffles Bull. Zoll. 48(1):55-58. (Ref. 39387) FB-Morphology-58238 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2001-07-25 00:00:00 2002-10-09 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58238 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat Dorsal spines (total): 1; Dorsal soft rays (total): 6 - 7; Analsoft rays: 35 - 42; Vertebrae: 46 - 48 Ng, H.H. and M. Kottelat 2000 Helicophagus leptorhynchus, a new species of molluscivorous catfish from Indochina (Teleostei: Pangasiidae). Raffles Bull. Zoll. 48(1):55-58. (Ref. 39387) FB-Distribution-58238 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2001-07-25 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58238 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution Asia: Chao Phraya and Mekong River drainages in Indochina. Ng, H.H. and M. Kottelat 2000 Helicophagus leptorhynchus, a new species of molluscivorous catfish from Indochina (Teleostei: Pangasiidae). Raffles Bull. Zoll. 48(1):55-58. (Ref. 39387) FB-Size-58238 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2001-07-25 00:00:00 2024-03-27 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58238 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size 47.2 cm SL (male/unsexed; (Ref. 43281)) Kottelat, M. 2001 Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281) FB-Threats-2 http://purl.org/dc/dcmitype/Text text/html Belen Acosta 1990-10-18 00:00:00 2024-03-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats Least Concern (LC) , IUCN Grouper and Wrasse Specialist Group IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. FB-Habitat-58238 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2001-07-25 00:00:00 2024-03-27 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58238 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat demersal; freshwater