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Down arrow Cat-eLog Data Sheet
Scientific Name Parancistrus nudiventris  Rapp Py-Daniel & Zuanon, 2005
Common Names LDA004, Peppermint Pleco
L031, L176, L300, Pebermynte-sugemalle (Denmark)
Type Locality Rio Xingú, bedrock at ilha do Bacabal, 3°23'19"S, 51°43'24"W, Pará State, Brazil.
Pronunciation parr an SIS truss - new dee ven triss
Etymology (Greek)Para=The side of + (Greek)agkistron=hook. The name nudiventris is derived from the Latin nudus, naked, and ventris, belly.
Down arrow Species Information
Size 175mm or 6.9" SL. Find near, nearer or same sized spp.
Identification Parancistrus is distinguished by having a membranous connection between the dorsal and adipose fins, a large gill opening, and its cephalic and body scutes are not keeled. Additionally, nuptial males have fleshy folds along the dorsal-fin base. Other genera with a membrane connecting the dorsal and adipose fins include Baryancistrus, Oligancistrus, and Spectracanthicus. Parancistrus differs from these genera by the large gill openings.

Initially known as the l-number L031 (collected at Altamira on the Rio Xingú).

Parancistrus nudiventris is distinguished from P. aurantiacus (the only other valid species of Parancistrus) by the lack of abdominal plates, 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), buccal teeth more conspicuous, and shorter posterior dentary processes.
Sexing Heavy odontodal growth on cheeks, pectoral spines and body plates on mature males. Much less or non-existent on mature females. Additionally, nuptial males have fleshy folds along the dorsal-fin base.
Down arrow Habitat Information
Distribution South America: Rio Xingu, Brazil.
Amazon, Lower Amazon, Xingu (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
Temperature 26.0-29.0°C or 78.8-84.2°F (Show species within this range)
Down arrow Husbandry Information
Feeding Feeds mainly on algae by browsing the periphyton. Stomach analysis also indicates insect larvae as part of the diet. The intestine is long, typical for mainly algae-based diet.
Furniture Per the original description Parancistrus nudiventris is a rheophilic species, found in rocky-bottom areas subjected to moderate to strong current. Specimens were found individually or in pairs in shelters under boulders or in narrow cracks on submerged rocks up to 2 meters deep. Young specimens (up to 5 cm SL) were observed under flat rocks over the bottom, usually sharing the shelter with specimens of Baryancistrus spp., Oligancistrus sp., O. punctatissimus, Hopliancistrus tricornis, Ancistrus sp., A. ranunculus, Peckoltia vittata and Pseudancistrus aff. barbatus.
Breeding Uncommonly bred in the aquarium, first documented spawning was 2018.
Breeding Reports There is but a single breeding report, read it here.
Down arrow Further Information
Reference Neotropical Ichthyology v. 3 (no. 4), pp 573, Figs. 1-2, 4-5.
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Last Update 2020 Nov 08 05:14 (species record created: 2001 May 04 00:00)