Cat-eLog Right Loricariidae Right Hypostominae Right Parancistrus  |  | 

  • Parancistrus nudiventrisAdult collected in Rio Xingu, Brazil
  • Parancistrus nudiventrisUnderwater in habitat
  • Parancistrus nudiventrisClose-up of joined dorsal and adipose fins
  • Parancistrus nudiventris
  • Parancistrus nudiventrisAdult collected in Rio Xingu, Brazil
  • Parancistrus nudiventris
  • Parancistrus nudiventris
  • Parancistrus nudiventris
  • Parancistrus nudiventris
  • Parancistrus nudiventris
  • Parancistrus nudiventrisPair, female below
  • Parancistrus nudiventris
  • Parancistrus nudiventris
  • Parancistrus nudiventrisCachoeira Grande do Iriri, 03°50'35.5"S, 052°44'08.3"W
  • Parancistrus nudiventrisHabitat: Rio Xingu
  • Parancistrus nudiventrisL031 - beginning colour change
  • Parancistrus nudiventrisL031 - xanthoristic
Down 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 Xingu, 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 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 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 Vulnerable, range map and more is available on the IUCN species page. Last assessed 2018.
Temperature 26.0-29.0°C or 78.8-84.2°F (Show species within this range)
Down 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. User data.
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 Further Information
Reference Neotropical Ichthyology v. 3 (no. 4), pp 573, Figs. 1-2, 4-5.
Registered Keepers There are 43 registered keepers, view all "my cats" data.
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Last Update 2021 Sep 01 14:50 (species record created: 2001 May 04 00:00)