Classification / Names
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Guyanancistrus: Composed from Guyana + see under Ancistrus.
More on authors: Heitmans, Nijssen & Isbrücker.
Issue
See Le Bail et al. (2000:236, fig.) for complementary description with biological observations and geographical distribution; 12S and 16S mitochondrial rRNA gene sequences used in a molecular phylogeny of Loricariidae by Montoya-Burgos et al. (1998: figs. 3,4,6 as Lasiancistrus niger).
Environment: milieu / climate zone / depth range / distribution range
ນິເວດວິທະຍາ
; ນ້ຳຈືດ ອາໄສຢູ່ໃກ້ໜ້າດິນໃຕ້ພື້ນທ້ອງນ້ຳ. Tropical
South America: Atlantic coastal drainages of the Guianas, from Nickerie to Oyapock River basins.
ຂະໜາດ / ນ້ຳໜັກ / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.2 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 36713)
The most ubiquitous, frequently occurring and abundant species of this genus. Occurs in all kinds of streams where the substrate is rocky and the water is flowing (Ref. 35381). Found in great numbers in zones of plunging waters (Ref. 27188). May be found together with Lithoxus in little forest creeks as well as in rapids (Ref. 35381).
Life cycle and mating behavior
ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ
Silva, G.S.C., F.F. Roxo and C. Oliveira, 2015. Two new species of Pseudancistrus (Siluriformes: Loricariidae) from the Amazon basin, northern Brazil. ZooKeys 482:21-34. (Ref. 99871)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.00866 - 0.02902), b=3.02 (2.87 - 3.17), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
ຄວາມຢືດຢຸ່ນ (Ref.
120179): ຂະໜາດກາງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງເທົ່າ 1.4 - 4.4 ປີ (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).