FB-65568 http://www.fishbase.org/summary/SpeciesSummary.php?id=65568 Animalia Chordata Teleostei Anguilliformes Ophichthidae Ophichthus Ophichthus microstictus McCosker, 2010 2010-06-16 2024-05-29 Magtoon, W.0 Oryzias songkhramensis, A New Species of Ricefish (Beloniformes; Adrianichthyidae) from Northeast Thailand and Central Laos. Tropical Natural History 10(1): 107-129. (Ref. 84389) FB-GeneralDescr-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:30:54 2024-07-18 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 The species was collected in clear water from ditches and paddy fields by dipnets in the Songkhram and Mekong River basins. The area of collection is a small ditch, 3-6 m wide and 0.5 to 2 m deep, Substrate ranges from sand to detritus or mud. Associated species include Trichogaster trichopterus, Trichopsis vittatus, Rasbora rubrodorsalis, Channa striata and Machrobrachium lanchesteri; aquatic plants Nymphaea lotus, Jussiaea repens and Hydrilla verticillata. Water quality in the area: 27.5-28.7 ºC, conductivity 41.5-124.4 μm/l, dissolved oxygen 2.05-3.97 mg/l, pH 7.1-7.9 and salinity 0.1 ppt (Ref. 84389). Magtoon, W. 2010 Oryzias songkhramensis, A New Species of Ricefish (Beloniformes; Adrianichthyidae) from Northeast Thailand and Central Laos. Tropical Natural History 10(1): 107-129. (Ref. 84389) FB-DiagnosticDescr-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:42:44 2010-06-16 22:47:15 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 Oryzias songkhramensis is distinguished from all other congeners by possessing the following combination of characters: anal-fin rays 15 - 16 (modally 16), bony contact organs on the anal-fin rays in males; a relatively anterior dorsal fin origin, opposite anal fin 13 - 14 (modally 14); vertebrae 27 - 29 (modally 28); fourth vertebra without neural prezygapophysis; scale relatively large, cycloid; 26 - 29 (modally 27) in a lateral series, predorsal scale 19 - 21 (modally 21); snout length shorter than eye diameter, snout length 12.9 - 31.2% (mean 21.7%) of HL; eye diameter 35.2 - 53.4% (mean 43.2%) of HL; a black spot at the base of pectoral fin, pectoral fin length 13.1 - 24.9% (mean 19.7%) of SL; length of anal fin base 19.4 - 30.0% (mean 25.6%) of SL; caudal peduncle length 11.3 - 20.3% (mean 16.7%) of SL; caudal fin slightly, rounded, length 3.6 - 3.8 (mean 3.7) in SL, black and pale yellow marginal bands on the dorsal and ventral portions of the caudal fin (Ref. 84389). Magtoon, W. 2010 Oryzias songkhramensis, A New Species of Ricefish (Beloniformes; Adrianichthyidae) from Northeast Thailand and Central Laos. Tropical Natural History 10(1): 107-129. (Ref. 84389) FB-Morphology-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:42:44 2010-06-16 22:47:15 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 Dorsal soft rays (total): 6 - 7; Analsoft rays: 15 - 17; Vertebrae: 27 - 29 Magtoon, W. 2010 Oryzias songkhramensis, A New Species of Ricefish (Beloniformes; Adrianichthyidae) from Northeast Thailand and Central Laos. Tropical Natural History 10(1): 107-129. (Ref. 84389) FB-Distribution-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:40:05 2010-06-18 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 Asia: Songkhram and Mekong River basins, Northeastern Thailand Magtoon, W. 2010 Oryzias songkhramensis, A New Species of Ricefish (Beloniformes; Adrianichthyidae) from Northeast Thailand and Central Laos. Tropical Natural History 10(1): 107-129. (Ref. 84389) FB-Uses-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:30:54 2024-07-18 00:00:00 Importance http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 fisheries: of no interest FB-Size-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:30:54 2024-07-18 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 1.9 cm SL (male/unsexed; (Ref. 84389)) Magtoon, W. 2010 Oryzias songkhramensis, A New Species of Ricefish (Beloniformes; Adrianichthyidae) from Northeast Thailand and Central Laos. Tropical Natural History 10(1): 107-129. (Ref. 84389) 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/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2 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-65577 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2010-06-16 22:30:54 2024-07-18 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=65577 pelagic; freshwater