Cat-eLog Right Arrow Loricariidae Right Arrow Hypostominae Right Arrow Pseudancistrus

Jump to next section Cat-eLog Data Sheet
Scientific Name Pseudancistrus sidereus  Armbruster, 2004
Common Name
Type Locality Río Siapa from 10-15 km downstream, Río Casiquiare - Río Negro drainage, 01.50000°, -065.71667°, Río Orinoco drainage, Amazonas, Venezuela.
Etymology Greek, pseudes = false + Greek, agkistron = hook or barb. "False Ancistrus", meaning that it is like an Ancistrus, but yet not quite. This specific epithet refers to the dark background which makes the white spots look like stars (sidereus=of the stars).
Jump to next section Species Information
Size 176mm or 6.9" SL. Find near, nearer or same sized spp.
Identification Pseudancistrus is the only genus of the Ancistrini (former Ancistrinae) that lacks evertible cheek plates. Because of this characteristic, it has at times been placed in the Hypostominae.

Pseudancistrus sidereus is diagnosed by a unique modification of the ventral plates on the caudal peduncle. In loricariids, the plates of the ventral row on the caudal peduncle are typically bent at an approximately 90° angle to follow the contour of the body. The bend is often the site of a slight keel formed from one or more rows of slightly longer odontodes. In P. sidereus, the keel is accentuated by having the dorsal laminae of the plates strongly concave. Although some loricariids may have the dorsal laminae slightly concave, it is much more pronounced in P. sidereus.
Jump to next section Habitat Information
Distribution South America: Venezuela.
Orinoco, Upper Orinoco (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Negro, Upper Negro, Casiquiare (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Jump to next section Husbandry Information
Breeding Unreported.
Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference Zootaxa No. 628, pp 8, Fig. 3.
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Last Update 2019 Sep 21 00:39 (species record created: 2007 Jan 22 22:11)