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Mark Henry Sabaj (1) Johnny Jensen's Photographic Library (1) Daniel Konn-Vetterlein (1) Kiruya Momochi (3)

Description: A single specimen that originated in the upper Río Napo in eastern Ecuador (ANSP 139105) and which is tentatively identified as Denticetopsis seducta has slightly higher number of total vertebrae (43) than the 39 to 42 total vertebrae that occur in the other examined specimens assigned herein to that species. Additional population samples of Denticetopsis from the upper Río Napo basin are necessary to determine whether this specimen represents yet another undescribed species. Habitat: This species has a relatively wide, albeit scattered, distribution in the central and western portions of the Amazon basin and possibly the southwestern portions of the Río Orinoco basin. The type series of Denticetopsis seducta that originated in the Río Ucayali basin and in the region of Iquitos in northeastern Peru, and the non-type population samples of the species from the Rio Aripuanã in the rio Madeira basin, Brazil agree in all examined features. Etymology: The specific name seducta: Latin for remote or apart, referring to it disjunct or scattered distribution (across a relatively wide portion of the central and western Amazon basin and possibly the southwestern portions of the Río Orinoco basin) relative to congeners.

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Cetopsidae

South America: Western Amazon River basin, and possibly southwestern Orinoco River basin. Type locality: Peru. Loreto: Caño “Sabalito,” small creek on terra firma approximately 25 mi (=km) S of Iquitos (4º14'45"S, 73º24'57"W).

5.0cm. (2ins)

22-28°c (71-83°f )

6.0-7.0.

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Vari, R.P., C.J. Ferraris, Jr. and M.C.C. de Pinna 2005 The neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study. Neotrop. Ichthyol. 3(2):127-238.