Open Access Open Access  Restricted Access Subscription or Fee Access


Review of the species of the genus Serrapinnus Malabarba, 1998 (Teleostei: Characidae: Cheirodontinae) from the rio Tocantins-Araguaia basin, with description of three new species



Species of the genus Serrapinnus from the rio Tocantins-Araguaia basin are revised and three new species are described. Serrapinnus aster new species is diagnosed by the presence of scimitar-shaped ventral procurrent caudal-fin rays of mature males forming a semicircle and by the presence of 7–9 cusps on the premaxillary teeth; S. lucindai new species is distinguished from its congeners by the presence of a higher number of ventral procurrent caudal-fin rays (17 to 19); and S. tocantinensis new species differs from the remaining species of the genus by the elongation of the unbranched dorsal and pelvic-fin rays into filaments in mature males. Serrapinnus sterbai is recognized as broadly distributed in the Tocantins-Araguaia basin and is redescribed based on specimens from across its entire distribution. A key for the cheirodontines occurring in the Atlantic drainages of northeastern Brazil, from the rio Tocantins-Araguaia to the rio Paraguaçú is provided.


Cheirodontini, Ctenocheirodon, identification key, sexual dimorphism, taxonomy

Full Text:

PDF/A (6.61 MB)


Bertaco, V.A. & Carvalho, F.R. (2010) New species of Hasemania (Characiformes: Characidae) from central Brazil, with comments on the endemism of upper rio Tocantins basin, Goiás State. Neotropical Ichthyology, 8, 27–32.

Bertaco, V.A., Jerep, F.C. & Carvalho, F.R. (2011) New species of Moenkhausia Eigenmann (Ostariophysi: Characidae) from the upper Rio Tocantins basin in central Brazil. Neotropical Ichthyology, 9, 57–63.

Bührnheim, C.M., Carvalho, T.P., Malabarba, L.R. & Weitzman, S.H. (2008) A new genus and species of characid fish from the Amazon basin: the recognition of a relictual lineage of characid fishes (Ostariophysi: Cheirodontinae: Cheirodontini). Neotropical Ichthyology, 6, 663–678.

Bührnheim, C.M. & Malabarba, L.R. (2006) Redescription of the type species of Odontostilbe Cope, 1870 (Teleostei: Characidae: Cheirodontinae), and description of three new species from the Amazon basin. Neotropical Ichthyology, 4, 167–196.

Bührnheim, C.M. & Malabarba, L.R. (2007) Redescription of Odontostilbe pulchra (Gill, 1858) (Teleostei: Characidae: Cheirodontinae), and description of two new species from the río Orinoco basin. Neotropical Ichthyology, 5, 1–20.

Fink, W.L. & Weitzman, S.H. (1974) The so-called cheirodontin fishes of Central America with descriptions of two new species (Pisces: Characidae). Smithsonian Contributions to Zoology, 172, 1–46.

Jerep, F.C. & Malabarba, L.R. (2014) A new species of Serrapinnus Malabarba, 1998 (Teleostei: Characidae: Cheirodontinae) from Rio Grande do Norte State, northeastern Brazil. Neotropical Ichthyology, 12 (2), 301–308.

Malabarba, L.R. (1998) Monophyly of the Cheirodontinae, characters and major clades (Ostariophysi: Characidae). In: Malabarba, L.R., Reis, R.E., Vari, R.P., Lucena, Z.M.S. & Lucena, C.A.S. (Eds.), Phylogeny and Classification of Neotropical Fishes. Edipucrs, Porto Alegre, pp. 193–233.

Malabarba, L.R. (2003) Subfamily Cheirodontinae (Characins, tetras). In: Reis, R.E., Kullander, S.O. & Ferraris Jr., C. (Eds.), Check list of the freshwater fishes of South and Central America. Edipucrs, Porto Alegre, pp. 215–221.

Malabarba, L.R. & Bertaco, V.A. (1999) Description of a new species of Heterocheirodon Malabarba (Teleostei: Characidae: Cheirodontinae: Cheirodontini) with further comments on the diagnosis of the genus. Comunicações do Museu de Ciências e Tecnologia da PUCRS, Série Zoologia, 12, 83–109.

Malabarba, L.R. & Jerep, F.C. (2012) A new genus and species of cheirodontine fish from South America (Teleostei: Characidae). Copeia, 2012, 243–250.

Malabarba, L.R., Lima, F.C.T. & Weitzman, S.H. (2004) A new species of Kolpotocheirodon (Teleostei: Characidae: Cheirodontinae: Compsurini) from Bahia, Northeastern Brazil, with new diagnosis of the genus. Proceedings of the Biological Society of Washington, 117, 317–329.

Malabarba, L.R. & Weitzman, S.H. (1999) A new genus and new species of South American fishes (Teleostei: Characidae: Cheirodontinae) with a derived caudal fin, together with comments on internally inseminated Cheirodontines. Proceedings of the Biological Society of Washington, 112, 410–432.

Malabarba, M.C.S.L. (1998) Megacheirodon, a new fossil genus of characiform fish (Ostariophysi: Characidae) from Tremembé Formation, Tertiary of São Paulo, Brazil. Ichthyological Exploration of Freshwaters, 8, 193–200.

Mariguela, T.C., Ortí, G., Avelino, G.S., Abe, K.T. & Oliveira, C. (2013) Composition and interrelationships of a large Neotropical freshwater fish group, the subfamily Cheirodontinae (Characiformes: Characidae): a case study based on mitochondrial and nuclear DNA sequences. Molecular Phylogenetics and Evolution, 68, 23–34.

Taylor, W.R. & Van Dyke, G.C. (1985) Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage. Cybium, 9, 107–119.

Weitzman, S.H. (1962) The osteology of Brycon meeki, a generalized Characidae fish, with an osteological definition of the family. Stanford Ichthyological Bulletin, 8, 1–77.

Weitzman, S.H. & Malabarba, L.R. (1999) Systematics of Spintherobolus (Teleostei: Characidae: Cheirodontinae) from eastern Brazil. Ichthyological Exploration of Freshwaters, 10, 1–43.

Zanata, A.M. & Vari, R.P. (2005) The family Alestidae (Ostariophysi, Characiformes): a phylogenetic analysis of a trans-Atlantic clade. Zoological Journal of the Linnean Society, 145, 1–144.

Zarske, A. (2012) Serrapinnus sterbai spec. nov. Beschreibung eines neuen Salmlers (Teleostei: Characiformes: Characidae: Cheirodontinae) aus Brasilien mit Bemerkungen zu S. gracilis (Géry, 1960) comb. nov. und S. littoris (Géry, 1960) comb. nov. Vertebrate Zoology, 62, 3–17.


  • There are currently no refbacks.

ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa