The Heptapteridae, or three-barbeled catfishes, are a family of catfish that originate from the Americas.[2] Most species are restricted to South America, but Imparfinis lineatus, Nemuroglanis panamensis and Pimelodella chagresi are native to Panama, and Rhamdia species occur as far north as Mexico. The name Heptapteridae is derived from Greek, hepta meaning seven and pteron meaning fin.[3]
The diversity of this family is poorly known, and many species are yet to be described.[2] So far, some 211 species have been described. This family is equivalent to the previously recognized Rhamdiinae, a subfamily of the family Pimelodidae.[2] However, molecular evidence shows this family is a part of the superfamily Pimelodoidea along with the Pimelodidae, Pseudopimelodidae, and Conorhynchos.[4]
The skin of these fish is usually naked (scaleless). They exhibit three pairs of barbels. They have a large adipose fin, and their caudal fin is deeply forked. However, no external characteristics unique to this family allow it to be differentiated from the Pimelodidae.[2]
The Heptapteridae include a few troglobitic species in the genera Pimelodella, Rhamdia, Rhamdiopsis, and Taunayia.[5][6]
^"Heptapteridae". Integrated Taxonomic Information System. Retrieved 7 April 2007.
^ abcdNelson, Joseph, S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7.{{cite book}}: CS1 maint: multiple names: authors list (link)
^Froese, Rainer, and Daniel Pauly, eds. (2007). "Heptapteridae" in FishBase. Apr 2007 version.
^Sullivan, JP; Lundberg JG; Hardman M (2006). "A phylogenetic analysis of the major groups of catfishes (Teleostei: Siluriformes) using rag1 and rag2 nuclear gene sequences". Mol Phylogenet Evol. 41 (3): 636–62. doi:10.1016/j.ympev.2006.05.044. PMID 16876440.
^Bichuette, Maria Elina; Trajano, Eleonora (2005). "A new cave species of Rhamdia (Siluriformes: Heptapteridae) from Serra do Ramalho, northeastern Brazil, with notes on ecology and behavior". Neotropical Ichthyology. 3 (4): 587–595. doi:10.1590/S1679-62252005000400016.
^Bockmann; and Castro (2010). The blind catfish from the caves of Chapada Diamantina, Bahia, Brazil (Siluriformes: Heptapteridae): description, anatomy, phylogenetic relationships, natural history, and biogeography. Neotrop. Ichthyol. 8(4). doi:10.1590/S1679-62252010000400001
The Heptapteridae, or three-barbeled catfishes, are a family of catfish that originate from the Americas. Most species are restricted to South America...
Cetopsidae, and Pimelodidae. Most recently, it has been classified in Heptapteridae. Its phylogenetic position remains uncertain. The family placement of...
Pimelodella brasiliensis is a species of three-barbeled catfish of the family Heptapteridae. It is endemic to the Paraíba do Sul river basin in Brazil, although...
under Pseudopimelodidae (previously subfamily Pseudopimelodinae) and Heptapteridae (previously subfamily Rhamdiinae). This family also previously included...
subfamily of Claroteidae and by others to be its own family, sister to Heptapteridae. In addition some authorities place the genus Horabagrus in the family...
Slobodian, V.; Bockmann, F.A. (2013). "A new Brachyrhamdia (Siluriformes: Heptapteridae) from Rio Japurá basin, Brazil, with comments on its phylogenetic affinities...
Kenneth J. Lazara (22 September 2018). "Order SILURIFORMES: Families HEPTAPTERIDAE, PHREATOBIIDAE, PIMELODIDAE and PSEUDOPIMELODIDAE". The ETYFish Project...
The ETYFish Project. 29 September 2015. "Order SILURIFORMES: Families HEPTAPTERIDAE, PHREATOBIIDAE, PIMELODIDAE and PSEUDOPIMELODIDAE". The ETYFish Project...
However, some evidence has shown this family, along with Pimelodidae, Heptapteridae, and Conorhynchos, may form a monophyletic assemblage, which contradicts...
; Trajano, E. (2005). "A new cave species of Rhamdia (Siluriformes: Heptapteridae) from Serra do Ramalho, northeastern Brazil, with notes on ecology and...
Slobodian, V. & Bockmann, F.A. (2013): A new Brachyrhamdia (Siluriformes: Heptapteridae) from Rio Japurá basin, Brazil, with comments on its phylogenetic affinities...
Pimelodella altipinnis is a species of three-barbeled catfish of the family Heptapteridae. It is endemic to the Essequibo River basin in Guyana. This species...
with Data on Ecology and Evolutionary Considerations (Siluriformes: Heptapteridae)". Copeia. 2004 (2): 315–325. doi:10.1643/ci-03-144r1. S2CID 86184371...
"A new species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from the Tapajós basin, Brazil". Zootaxa. 4701 (5): 461–472. doi:10...
Lesley S. de Souza. 2021. A New Species of Cetopsorhamdia (Siluriformes: Heptapteridae) from the Upper Amazon River basin. Journal of Fish Biology. v t e...
new species of Rhamdella Eigenmann & Eigenmann, 1888 (Siluriformes: Heptapteridae) from the coastal basins of southern Brazil. Arquivos de Zoologia, 45:...
(2020-12-02). "A new species of Phenacorhamdia Dahl 1961 (Siluriformes: Heptapteridae) from the Paranapanema River basin, southeastern Brazil". Zootaxa. 4890...
1905 from groundwaters of the Iténez River, Bolivia (Siluriformes: Heptapteridae)". Zootaxa. 1626: 51–58. doi:10.11646/zootaxa.1626.1.4. Ohara, W.M.;...
Phylum: Chordata Class: Actinopterygii Order: Siluriformes Family: Heptapteridae Genus: Brachyglanis C. H. Eigenmann, 1912 Type species Brachyglanis...
to any of the families found in its range (Ariidae, Ictaluridae, or Heptapteridae). It is most similar to Ictaluridae, but lacks some important characteristics...
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