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Julian Dignall (1) Johnny Jensen's Photographic Library (4) Zierfisch Zentrum Austria (2) Haakon Haagensen (1)

Description: Can be distinguished from P. aurantiacus by having a naked abdomen (plated in P. aurantiacus), the presence of bluish dots in living specimens or spotted in preserved specimens (uniformly dark or clear brown or mottled, never spotted in P. aurantiacus), larger interbranchial distance (39-56% in HL vs. 24.9-39.5% in P. aurantiacus), narrower interorbital distance (26.8-38% in HL vs. 38.5-43.1% in P. aurantiacus). Parancistrus nudiventris also has buccal teeth more conspicuous than in P. aurantiacus. Main skeletal differences include the presence of a strong condyle on the lateral ethmoid for articulation with the metapterygoid in P. nudiventris (not seen in P. aurantiacus); anguloarticular processes short in P. nudiventris (long in P. aurantiacus); opercle with odontodes, partly exposed in P. nudiventris (completely embedded in skin in P. aurantiacus). This genera have a broad and flattened body with large scutes. The dorsal and adipose fin is connected with a membrane and they have very large gill openings. Aquarium Care: Only fairly territorial while youngsters prefer to rest under pieces of wood and on to rockwork. Adults rest on the substrate in hiding places. Sexual Differences: Males posses a broader head and more strongly bristled pectoral spines. The bristles on the posterior of the males scutes are elongated when sexually mature. Diet: Omnivore. A varied diet with both vegetable and other foods such as tablet, live and frozen. Etymology: The specific name nudiventris: nudus (L.), bare or naked; ventris, genitive of venter (L.), belly, referring to naked (i.e., non-plated) abdomen, compared with the plated abdomen of Parancistrus aurantiacus.

L031, L176, LDA04, L300

None

Loricariidae

Brazil: Rio Xingu. Type locality: Brazil; Pará State; rio Xingu, bedrock at ilha do Bacabal, 3º23'19" S, 51º43'24".

25.0cm. (10ins)

26-30°c (79-87°f)

6.0-7.2.

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Rapp Py-Daniel, L.H. and J. Zuanon 2005 Description of a new species of Parancistrus (Siluriformes: Loricariidae) from the rio Xingu, Brazil. Neotrop. Ichthyol.3(4):571577.
Seidel, I. 2008. Back to Nature guide to L-catfishes, Ettlingen, Germany 208 p.