FB-58317 http://www.fishbase.org/summary/SpeciesSummary.php?id=58317 Animalia Chordata Teleostei Siluriformes Loricariidae Loricariichthys Loricariichthys rostratus Reis & Pereira, 2000 2001-09-01 2001-09-02 Stiassny, M.L.J. and D.M. Rodriguez0 Rheocles derhami, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Ambomboa River in northeastern Madagascar. Ichthyol. Explor. Freshwat. 12(2):97-104. (Ref. 39832) Sparks, J.S. and M.L.J. Stiassny0 Introduction to the freshwater fishes. p. 849-863. In S.M. Goodman and J.P. Benstead (eds.) The natural history of Madagascar. The University of Chicago Press, Chicago and London. 1709 p. (Ref. 56151) Loiselle, P.V. and M.L.J. Stiassny0 Rheocles, Malagasy rainbowfish, aona. p. 868-870. In S.M. Goodman and J.P. Benstead (eds.) The natural history of Madagascar. The University of Chicago Press, Chicago and London. 1709 p. (Ref. 56178) Beolens, B., M. Grayson and M. Watkins0 Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. (Ref. 128868) FB-DiagnosticDescr-58323 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2001-09-10 00:00:00 2001-09-10 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58323 http://rs.tdwg.org/ontology/voc/SPMInfoItems#DiagnosticDescription Rheocles derhami is readily distinguished from R. sikorae and R. wrightae by length of upper jaw (32-41%HL versus 46-58) and absence of black pigmentation of genital papilla, from R. pellegrini by number of gill rakers on lower limb of first arch (9-10 versus 6-7), from R. lateralis by caudal peduncle length (67.3-78.6%SL versus 84.6-96.7), and from R. alaotrensis by absence of chest and belly scales and paired predorsal scale rows (Ref. 39832). In life males normally light grey, the second dorsal, anal and caudal fins are bright silvery blue, the throat region is orange-red, light grey females are not brightly colored; preserved specimens are creamy yellow, scale rows in dorsal midline heavily pigmented and darkened (Ref. 39832). Stiassny, M.L.J. and D.M. Rodriguez 2001 Rheocles derhami, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Ambomboa River in northeastern Madagascar. Ichthyol. Explor. Freshwat. 12(2):97-104. (Ref. 39832) FB-Morphology-58323 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2001-09-10 00:00:00 2001-09-10 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=58323 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Morphology Dorsal spines (total): 2; Dorsal soft rays (total): 14 - 19; Analspines: 1; Analsoft rays: 15 - 21; Vertebrae: 35 - 38 Stiassny, M.L.J. and D.M. Rodriguez 2001 Rheocles derhami, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Ambomboa River in northeastern Madagascar. Ichthyol. Explor. Freshwat. 12(2):97-104. (Ref. 39832) FB-Distribution-58323 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2001-09-07 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=58323 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution Africa: Madagascar. Stiassny, M.L.J. and D.M. Rodriguez 2001 Rheocles derhami, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Ambomboa River in northeastern Madagascar. Ichthyol. Explor. Freshwat. 12(2):97-104. (Ref. 39832) FB-TrophicStrategy-58323 http://purl.org/dc/dcmitype/Text text/html Estelita Emily Capuli 2002-10-24 00:00:00 2002-10-24 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public derhami http://rs.tdwg.org/ontology/voc/SPMInfoItems#Uses During low water season, the Ambomboa (= Amboaboa) is fairly clear with a conductivity of around 100 µS/cm, and pH 8.3, flowing over a rock and sand bed and forming numerous small rapids alternating with quieter pools. Gut short and simple; contains almost exclusively of macerated insect remains of terrestrial origin; a few aquatic larval remains present in some individuals. Stiassny, M.L.J. and D.M. Rodriguez 2001 Rheocles derhami, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Ambomboa River in northeastern Madagascar. Ichthyol. Explor. Freshwat. 12(2):97-104. (Ref. 39832) FB-Size-58323 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2001-09-07 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=58323 http://rs.tdwg.org/ontology/voc/SPMInfoItems#TrophicStrategy 5.0 cm SL (male/unsexed; (Ref. 39832)) Stiassny, M.L.J. and D.M. Rodriguez 2001 Rheocles derhami, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Ambomboa River in northeastern Madagascar. Ichthyol. Explor. Freshwat. 12(2):97-104. (Ref. 39832) 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#Size 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-58323 http://purl.org/dc/dcmitype/Text text/html Gert Boden 2001-09-07 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=58323 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats pelagic; freshwater