A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins

Bertaco, Vinicius de Araújo; Malabarba, Luiz Roberto

doi:10.1590/s1679-62252005000100004

Cited by 862 publications

(22 citation statements)

References 5 publications

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“…Hasemania crenuchoides was described by Zarske & Géry (1999) Hasemania kalunga is similar to Hyphessobrycon hamatus (upper rio Tocantins basin), but differs in the number of branched anal-fin rays (12-15 vs. 16-18), absence of scale sheath along anal-fin base and of an adipose-fin (vs. presence), and absence of bony hooks in the dorsal and pectoral fin of males (vs. presence) (Bertaco & Malabarba, 2005). Hasemania kalunga is the first species of the genus described from the rio Tocantins basin, possibly due to the limited collecting effort, mainly in the upper portion of this basin.…”

Section: Discussionmentioning

confidence: 99%

New species of Hasemania (Characiformes: Characidae) from Central Brazil, with comments on the endemism of upper rio Tocantins basin, Goiás State

Bertaco

Carvalho

2010

Neotrop. ichthyol.

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H. crenuchoides by morphometric data. The absence of scale sheath covering the anal-fin base, an uncommon character in Characidae, and the endemism of the ichthyofauna from the upper rio Tocantins are discussed.Hasemania kalunga é descrita para a bacia do alto rio Tocantins, Chapada dos Veadeiros, Goiás, Brasil. A espécie nova distingue-se das suas congêneres pelo número de escamas perfuradas da linha lateral (11-21 vs. 5-9, exceto de H. crenuchoides e H. piatan), pela presença de uma mancha umeral preta e verticalmente alongada (vs. ausência, exceto de H. crenuchoides, H. nambiquara e H. piatan), e pela ausência de escamas na base da nadadeira anal (vs. presença, exceto de H. maxillaris e H. piatan), por 19 raios principais na nadadeira caudal (vs.18 em H. piatan). Ela também difere de H. crenuchoides por dados morfométricos. A ausência de uma bainha de escamas cobrindo a base da nadadeira anal, um caráter incomum em Characidae, e o endemismo da ictiofauna do alto rio Tocantins são discutidos.

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Section: Discussionmentioning

confidence: 99%

New species of Hasemania (Characiformes: Characidae) from Central Brazil, with comments on the endemism of upper rio Tocantins basin, Goiás State

Bertaco

Carvalho

2010

Neotrop. ichthyol.

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“…Moenkhausia pankilopteryx, and except in the caudal fin in Astyanax elachylepis and Hyphessobrycon hamatus (see Bertaco & Malabarba, 2005). The presence of bony hooks on the dorsal-and pectoral-fin rays is unknown among the species of Hemibrycon.…”

Section: Discussionmentioning

confidence: 99%

A new species of Hemibrycon (Teleostei: Characiformes: Characidae) from the río Ucayali drainage, Sierra del Divisor, Peru

et al. 2007

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A new characid species, Hemibrycon divisorensis, is described from the río Ucayali drainage, Loreto, Peru. The new species is distinguished from all Hemibrycon species by the presence of a wide black asymmetrical spot covering base of caudal-fin rays and extending along entire length of caudal-fin rays 9 to 12-13 (except from H. surinamensis), and a black band in the lower half of the caudal peduncle extending from the region above the last anal-fin rays to the caudal-fin base. Furthermore, it is distinguished from most species of the genus by the number of scale rows below the lateral line (4-5 vs 5-9), except H. jabonero, H. microformaa, H. orcesi, and H. surinamensis. It differs from these species by scale and fin ray counts and color pattern. The lack of a supraorbital in Hemibrycon species is discussed and confirmed.Uma nova espécie de caracídeo, Hemibrycon divisorensis, é descrita para a bacia do río Ucayali, Loreto, Peru. A nova espécie distingue-se das demais espécies de Hemibrycon pela presença de uma ampla mancha preta assimétrica na base dos raios da nadadeira caudal estendida até a extremidade dos raios 9 a 12 ou 13 (exceto de H. surinamensis), e de uma faixa preta na metade inferior do pedúnculo caudal desde a região acima dos últimos raios da nadadeira anal até a base da nadadeira caudal. Ela distingue-se da maioria das espécies do gênero pelo número de escamas abaixo da linha lateral (4-5 vs 5-9), exceto de H. jabonero, H. microformaa, H. orcesi e H. surinamensis. Ela difere destas espécies pela contagem de escamas, raios das nadadeiras e colorido padrão. Discute-se e confirma-se a ausência do osso supraorbital em Hemibrycon.

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“…The presence and morphology of these bony hooks represent an important data source for comparative phylogenetic, reproductive and behavioral studies (Bertaco, Malabarba, 2005;Vieira et al, 2016). Even though they are usually less developed and less informative in the species of Odontostilbe, their number and size were useful to diagnose O. avanhandava, O.…”

Section: Discussionmentioning

confidence: 99%

Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae)

2018

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Specimens historically identified as Odontostilbe microcephala from the upper rio Paraná and Andean piedmont tributaries of the río Paraguay are reviewed and split in three species. We found that the distribution of O. microcephala is restricted to the Andean slope of the río Paraguay basin. The species is distinguished from congeners with subterminal mouth by the elongate body, usually 10-12 gill rakers on upper branch and smaller horizontal orbital diameter (24.6-32.8 % HL, mean 28.7%). Specimens from upper rio Paraná constitute two new species, diagnosed from other Cheirodontinae by the presence of mesopterygoid teeth, grouped on median portion and forming a continuous row. The new species are distinguished from each other by having premaxillary teeth with five cusps vs. nine cusps and by the number of lamellae in left and right sides of central median raphe of olfactory rosette with 20-21 vs. 11-12.Keywords: Biodiversity, Characidae, La Plata River basin, Mesopterygoid teeth, Taxonomy.Espécimes historicamente identificados com Odontostilbe microcephala do rio Paraná e tributários do río Paraguay, foram revisados e separados em três espécies. A distribuição de O. microcephala é restrita ao sopé andino da bacia do río Paraguay. A espécie é distinta das congêneres com boca subterminal pela forma alongada, geralmente 10-12 rastros branquiais no ramo superior e menor diâmetro horizontal da órbita (24,6-32,8 % CC, média 28,7%). Espécimes do alto rio Paraná constituem duas espécies novas diagnosticadas de outros Cheirodontinae pela presença de dentes no mesopterigoide, agrupados em sua porção média e formando uma fileira continua. As novas espécies distinguem-se por ter dentes premaxilares com cinco cúspides vs. nove cúspides e pelo número de lamelas nos lados esquerdo e direito da rafe central da roseta olfativa com 20-21 vs. 11-12.Palavras-chave: Bacia do rio da Prata, Biodiversidade, Characidae, Dentes do Mesopterigoide, Taxonomia.

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A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins

Cited by 862 publications

References 5 publications

New species of Hasemania (Characiformes: Characidae) from Central Brazil, with comments on the endemism of upper rio Tocantins basin, Goiás State

New species of Hasemania (Characiformes: Characidae) from Central Brazil, with comments on the endemism of upper rio Tocantins basin, Goiás State

A new species of Hemibrycon (Teleostei: Characiformes: Characidae) from the río Ucayali drainage, Sierra del Divisor, Peru

Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae)

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