FB-63781 http://www.fishbase.org/summary/SpeciesSummary.php?id=63781 Animalia Chordata Teleostei Gobiiformes Gobiidae Gobius Gobius tropicus Osbeck, 1765 2008-04-30 2021-10-11 Bertaco, V.A. and V. Garutti0 New <i>Astyanax</i> from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035) FB-GeneralDescr-63790 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-05-01 00:00:00 2008-05-01 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63790 Found in a large river which has several waterfalls, with crystalline water, segments with rapids, a well developed riparian vegetation and a substrate of stones, rocks and sand (Ref. 75035). Occurs along the left bank of the river in semilentic stretches (Ref. 75035). Bertaco, V.A. and V. Garutti 2007 New <i>Astyanax</i> from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035) FB-DiagnosticDescr-63790 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-05-01 00:00:00 2012-12-27 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63790 Diagnosed from most members of the genus Astyanax and include it in the A. bimaculatus species group by its horizontally elongate oval, black humeral spot, lozenge shaped caudal-peduncle spot continued into middle caudal-fin rays, and two brown bars in the humeral region. Can be differentiated from species of this group by the following combination of characters: a reticulate scale pattern, a black longitudinal stripe, a toothless maxilla, larger dentary teeth, teeth of the inner row of the premaxilla with five to seven cusps, body depth 33.3-39.9% of SL, predorsal distance 51.7-55.5% of SL, caudal peduncle depth 12.0-13.4% of SL, head length 23.9-26.4% of SL, orbital diameter 28.5- 34.3% of HL, interorbital width 32.7-38.4% of HL, 36-38 perforated scales along the lateral line, and 22-26 branched anal-fin rays, 25-29 total (Ref. 75035).Description: Dorsal fin ii,9; Anal fin iii-iv,22-25; Pectoral fin i11-14; Pelvic fin i7 (Ref. 75035). Bertaco, V.A. and V. Garutti 2007 New <i>Astyanax</i> from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035) FB-Morphology-63790 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-05-01 00:00:00 2012-12-27 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63790 Dorsal soft rays (total): 11; Vertebrae: 34 - 35 Bertaco, V.A. and V. Garutti 2007 New <i>Astyanax</i> from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035) FB-Distribution-63790 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-05-01 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=63790 South America: known only from rio Papagaio of the upper rio Tapajós drainage in Brazil. Bertaco, V.A. and V. Garutti 2007 New <i>Astyanax</i> from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035) FB-Size-63790 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-05-01 00:00:00 2008-05-01 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63790 7.9 cm SL (male/unsexed; (Ref. 75035)) Bertaco, V.A. and V. Garutti 2007 New <i>Astyanax</i> from the upper Rio Tapajós drainage, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 5(1):25-30. (Ref. 75035) 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-63790 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-05-01 00:00:00 2008-05-01 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63790 benthopelagic; freshwater