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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Guyanancistrus: Composed from Guyana + see under Ancistrus; nassauensis: The specific name nassauensis is used in reference to the distribution of the new species which occurs only in streams in the Nassau Mountains, an area now under threat of a proposed bauxite mine and illegal gold mining.
Guyanancistrus brownsbergensisMol, Fisch.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Tropical; 23°C - ? (Ref. 116863)
South America: Paramaka Creek and some of its tributaries, Marowijne River Basin in the Surinamese Nassau Mountains.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 6.1 cm SL mâle / non sexé; (Ref. 116863)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 7; Rayons mous anaux: 5.
Body shape (shape guide): elongated.
The type locality, Paramaka Creek, is a medium sized and shallow stream with 3-7 m width, less than 50 cm depth, pools and some riffle habitat, a rocky substrate, and bordered by terra firme rainforest. Its water was transparent with a mean pH of 6.26, conductivity 24.2 μS/cm and temperature 23.2°C. Collected together with several Harttiella crassicauda (Ref. 116863).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Fisch-Muller, S., J.H.A. Mol and R. Covain, 2018. An integrative framework to reevaluate the Neotropical catfish genus Guyanancistrus (Siluriformes: Loricariidae) with particular emphasis on the Guyanancistrus brevispinis complex. Plos ONE 13(1):e0189789. (Ref. 116863)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menacé (EN) (B1ab(iii)+2ab(iii)); Date assessed: 21 October 2020
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01549 (0.00729 - 0.03291), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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0 |
Résilience (Réf. 120179) |
Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (18 of 100). 🛈 |