Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > 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.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical; 23°C - ? (Ref. 116863)
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
South America: Paramaka Creek and some of its tributaries, Marowijne River Basin in the Surinamese Nassau Mountains.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.1 cm SL male/unsexed; (Ref. 116863)
Morphology | Morphometrics
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 ?S/cm and temperature 23.2°C. Collected together with several Harttiella crassicauda (Ref. 116863).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01698 (0.00778 - 0.03707), b=2.92 (2.74 - 3.10), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .