Cetopsis oliveirai

(Lundberg and Rapp Py-Daniel 1994) Vari, Ferraris and de Pinna 2005



Bathycetopsis oliveirai  Lundberg and Rapp Py-Daniel 1994




Holotype: INPA 4439, 27.9mm SL.

Paratypes: INPA 7689, 2, 27.7 (female) 28.1 SL, MZUSP 44068, 1, 27.0 SL, USNM 325618, 1, 21.6 SL, DU F1170, 1, 29.6 SL CAS, INPA 4533, 1, 22.7 SL, INPA 4668, 1, 30.0 SL, INPA 4669, 2, 24.7-30.7 SL.


Middle and upper Amazon River basin: Brazil, Ecuador, Bolivia and Peru. Habitat: freshwater.


A member of the subfamily Cetopsinae.

Conservation Status


Key References

The paper by Andres et al. (1988) is an important contribution to the anatomy of the electroreceptors in Cetopsid fishes. However, it is not known which species in the Family (39 species in 4 genera, Van der Sleen and Albert 2018) was examined as the paper calls the animal investigated "Pseudocetopsis spec.". This is now in the synonymy of three different Cetopsid genera: Cetopsis, Cetopsidium and Denticetopsis (Eschmeyer et al. 2021). Despite this uncertainty the observations are very valuable.

Andres, K.H., von Diiring, M. and Petrasch, E. Journal Article 1988 The fine structure of ampullary and tuberous electroreceptors in the South American blind catfish Pseudocetopsis spec.
Oliveira, J. Thesis 1988 Osteologia e revisao sistematica de Cetopsidae (Teleostei, Siluriformes)
Milani De Arnal, N. Thesis 1991 Osteologia del bagre Cetopsis coecutiens (Lichenstein) 1819 (Siluriformes, Cetopsidae) y especies de la familia Cetopsidae en Venezuela
Lundberg, J.G. and Rapp Py-Daniel, L. Journal Article 1994 Bathycetopsis oliveira gen. et sp. nov., a blind and depigmented catfish (Siluriformes: Cetopsidae) from the Brazilian Amazon
Vari, R.P., Ferraris Jr., C.J. and de Pinna, M.C.C. Journal Article 2005 The Neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study
Diogo, R., Chardon, M. and Vandewalle, P. Journal Article 2006 Osteology and myology of the cephalic region and pectoral girdle of Cetopsis coecutiens Spix & Agassiz, 1829, comparison with other cetopsids, and comments on the synapomorphies and phylogenetic position of the Cetopsidae (Teleostei : Siluriformes)
De Pinna, M.C.C., Ferraris, C.J. and Vari, R.P. Journal Article 2007 A phylogenetic study of the neotropical catfish family Cetopsidae (Osteichthyes, Ostariophysi, Siluriformes), with a new classification
van der Sleen, P. and Albert, J.S. Journal Article 2018 Family Cetopsidae - Whale Catfishes
Abrahão, V.P. Thesis 2018 Neuroanatomia e filogenia da família Cetopsidae (Osteichthyes, Ostariophysi, Siluriformes) com análise simultânea de dados morfológicos e moleculares