''Paracetopsis atahualpa'' is a species of

whale catfish The Cetopsidae are a small family of catfishes (order Siluriformes), commonly called the whale catfishes. Taxonomy This family contains five genera divided into two subfamilies, Cetopsinae and Helogeneinae. Helogeneinae was previously a family-l ...

of the family

Cetopsidae The Cetopsidae are a small family of catfishes (order Siluriformes), commonly called the whale catfishes. Taxonomy This family contains five genera divided into two subfamilies, Cetopsinae and Helogeneinae. Helogeneinae was previously a family-l ...

. It is found in

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

and

Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...

where it occurs in the

Tumbes River The Tumbes River ( es, Río Tumbes or Río Túmbez in Peru; Río Puyango in Ecuador), is a river in South America. The river's sources are located between Ecuadorian El Oro and Loja provinces. It is the border between El Oro and Loja, and afterw ...

basin (northwestern Peru) and the adjoining upper reaches of the

Zarumilla River The Zarumilla River is a river in South America that marks the border between Peru and Ecuador. It is named after the Peruvian town of Zarumilla. It is part of the Gulf of Guayaquil-Tumbes mangroves Sanctuary and its currents, sediments, and ti ...

(southwestern Ecuador).

References

* Cetopsidae Fish described in 2005 Fish of South America Freshwater fish of Peru Freshwater fish of Ecuador {{siluriformes-stub