FB-66677 http://www.fishbase.org/summary/SpeciesSummary.php?id=66677 Animalia Chordata Teleostei Osteoglossiformes Mormyridae Petrocephalus Petrocephalus stuhlmanni Boulenger, 1909 Charuto Cubio Flecheiro Orana 2012-12-06 2024-03-15 Beltrão, H. and J. Zuanon0 Hemiodus langeanii (Characiformes: Hemiodontidae), a new species from rio Amana, rio Maués-Açú drainage, Amazon basin, Brazil. Neotrop. Ichthyol. 10(2):255-262. (Ref. 91067) Beolens, B., M. Grayson and M. Watkins0 Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. (Ref. 128868) FB-GeneralDescr-66686 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2012-12-11 00:00:00 2021-09-16 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66686 Found in slow-flowing stretches of the rio Amana and igarapé Porquinho (1.0-2.5 m deep) and in artificial ponds (4.0-5.0 m deep and 40-70 m in diameter) resulting from gold-mining activities. The Rio Amana and its tributaries are characterized by clear water (not stained by humic acids) but turbid due to excess of fine suspended solids (clay) as a result of mining activities along river margins and/or bottom such as dredging (Ref. 91067). Beltrão, H. and J. Zuanon 2012 Hemiodus langeanii (Characiformes: Hemiodontidae), a new species from rio Amana, rio Maués-Açú drainage, Amazon basin, Brazil. Neotrop. Ichthyol. 10(2):255-262. (Ref. 91067) FB-DiagnosticDescr-66686 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2012-12-11 00:00:00 2012-12-11 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66686 Distinguished from other species of Hemiodus by its high body (27.1-35.3%, average 32.3% SL vs. 18.8-28.5% in remaining species). Other diagnostic characters include the following: presence of a large lateral dark spot that is equal to, or greater than, the eye diameter (vs. smaller in remaining species except for Hemiodus microlepis); absence of conspicuous lateral stripe or transverse bands; 68-74 scales on lateral line (vs. 94-123 in Hemiodus argenteus, 124-148 in Hemiodus microlepis, 86-99 in Hemiodus orthonops and 77-92 in Hemiodus parnaguae). Differs from Hemiodus unimaculatus (which overlaps in the number of lateral line scales) by having 9-10 scales between the lateral line and the pelvic fin origin (vs. 4-7), which are similar sized above and below lateral line (vs. scales larger bellow the lateral line in Hemiodus unimaculatus) (Ref. 91067).Description: Dorsal-fin rays ii, 9; Anal-fin rays ii, 9-11; pectoral fin rays i, 17-19; pelvic fin rays i, 10-11 (Ref. 91067). Beltrão, H. and J. Zuanon 2012 Hemiodus langeanii (Characiformes: Hemiodontidae), a new species from rio Amana, rio Maués-Açú drainage, Amazon basin, Brazil. Neotrop. Ichthyol. 10(2):255-262. (Ref. 91067) FB-Morphology-66686 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2012-12-11 00:00:00 2012-12-11 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66686 Dorsal soft rays (total): 11 - 12; Analsoft rays: 11 - 13; Vertebrae: 36 Beltrão, H. and J. Zuanon 2012 Hemiodus langeanii (Characiformes: Hemiodontidae), a new species from rio Amana, rio Maués-Açú drainage, Amazon basin, Brazil. Neotrop. Ichthyol. 10(2):255-262. (Ref. 91067) FB-Distribution-66686 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2012-12-11 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66686 South America: known of the type locality in the rio Amana, rio Maués-Açu drainage, near the boundary of the States of Pará and Amazonas, Brazil Beltrão, H. and J. Zuanon 2012 Hemiodus langeanii (Characiformes: Hemiodontidae), a new species from rio Amana, rio Maués-Açú drainage, Amazon basin, Brazil. Neotrop. Ichthyol. 10(2):255-262. (Ref. 91067) FB-Size-66686 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2012-12-11 00:00:00 2021-09-16 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66686 13.6 cm SL (male/unsexed; (Ref. 91067)) Beltrão, H. and J. Zuanon 2012 Hemiodus langeanii (Characiformes: Hemiodontidae), a new species from rio Amana, rio Maués-Açú drainage, Amazon basin, Brazil. Neotrop. Ichthyol. 10(2):255-262. (Ref. 91067) 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-66686 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2012-12-11 00:00:00 2021-09-16 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=66686 benthopelagic; freshwater; pH range: 6.4 - 6.8