Knodus

Knodus
Knodus borki
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Stevardiidae
Subfamily:	Diapominae
Genus:	Knodus C. H. Eigenmann, 1911 [1]
Type species
Knodus meridae C. H. Eigenmann, 1911 [1]
Synonyms [1]
Bryconadenos Weitzman, Menezes, Evers & Burns, 2005

Knodus is a genus of freshwater ray-finned fishes, characins, belonging to the family Stevardiidae. The fishes in this genus are found in South America. ^[2]

Species

Knodus contains the following valid species: ^[3]

• Knodus alpha (C. H. Eigenmann, 1914)
• Knodus angustus Menezes, K. M. Ferreira & Netto-Ferreira, 2020
• Knodus borari Silva-Oliveira, Canto & Ribeiro, 2023
• Knodus borki Zarske, 2008
• Knodus breviceps (C. H. Eigenmann, 1908)
• Knodus chapadae (Fowler, 1906)
• Knodus cinarucoensis (Román-Valencia, Taphorn & Ruiz-C., 2008)
• Knodus cismontanus (C. H. Eigenmann, 1914)
• Knodus cupariensis de Sousa, Silva-Oliveira, Canto & Ribeiro, 2020
• Knodus delta Géry, 1972
• Knodus deuterodonoides (C. H. Eigenmann, 1914)
• Knodus diaphanus (Cope, 1878)
• Knodus dorsomaculatus K. M. Ferreira & Netto-Ferreira, 2010
• Knodus figueiredoi Esguícero & R. M. C. Castro, 2014 ^[4]
• Knodus gamma Géry, 1972
• Knodus geryi F. C. T. Lima, Britski & Machado, 2004
• Knodus heteresthes (C. H. Eigenmann, 1908)
• Knodus hypopterus (Fowler, 1943)
• Knodus longus Zarske & Géry, 2006
• Knodus macarenae (Román-Valencia, García-Alzate, Ruiz-C. & Taphorn, 2010)
• Knodus megalops G. S. Myers, 1929
• Knodus meridae C. H. Eigenmann, 1911
• Knodus mizquae (Fowler, 1943)
• Knodus moenkhausii (C. H. Eigenmann & C. H. Kennedy, 1903)
• Knodus nuptialis Menezes & Marinho, 2019 ^[5]
• Knodus obolus Deprá, Ota, Vitorino Júnior & K. M. Ferreira 2021
• Knodus orteguasae (Fowler, 1943)
• Knodus pasco Zarske, 2007
• Knodus savannensis Géry, 1961
• Knodus septentrionalis Géry, 1972
• Knodus shinahota K. M. Ferreira & Carvajal-Vallejos, 2007
• Knodus smithi (Fowler, 1913)
• Knodus tanaothoros (Weitzman, Menezes, Evers & Burns, 2005)
• Knodus tiquiensis K. M. Ferreira & F. C. T. Lima, 2006
• Knodus victoriae (Steindachner, 1907)
• Knodus weitzmani (Menezes, Netto-Ferreira & K. M. Ferreira, 2009)
• Knodus ytuanama K. M. Ferreira and W. M. Ohara, 2022 ^[6]

References

1. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Diapominae". Catalog of Fishes . California Academy of Sciences . Retrieved 14 September 2025.
2. Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Knodus". FishBase . June 2024 version.
3. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Knodus". Catalog of Fishes . California Academy of Sciences . Retrieved 14 September 2025.
4. Esguícero, A.L.H.; Castro, R.M.C. (2014). "Knodus figueiredoi, a new characid from the Rio das Garças, upper Rio Araguaia basin, Brazil, with comments on the taxonomic limits of the genera Knodus and Bryconamericus (Teleostei: Characidae)". Ichthyological Exploration of Freshwaters. 25 (1): 39–48.
5. Menezes, N.A.; M.M.F. Marinho (2019). "A New Species of Knodus Eigenmann (Characiformes: Characidae: Stevardiinae) with Comments on Nuptial Tubercles and Gill Gland in Characiform Fishes". PLOS ONE. 14 (7) e0217915. Bibcode:2019PLoSO..1417915M. doi: 10.1371/journal.pone.0217915 . PMC   6619666 . PMID   31291277.
6. Katiane M. Ferreira; Willian Massaharu Ohara (2022). "A New Rheophilic Species of Knodus Eigenmann (Characiformes: Characidae: Stevardiinae) from the upper rio Juruena, rio Tapajós basin, Chapada dos Parecis, Mato Grosso, Brazil". Zootaxa. 5227 (3): 365–377. doi:10.11646/zootaxa.5227.3.5. PMID   37044684.