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> Siluriformes (Catfishes) > Loricariidae (Armored catfishes) > Hypostominae
Etymology: Baryancistrus: Greek, barys = heavy + Greek, agkistron = hook (Ref. 45335); beggini: Named for Chris Beggin, for his financial support of this research, ethical ornamental fish business practices, and influence on the professional development of the first author.
Eponymy: Chris D Beggin, of Nashville, Tennessee. owns a fish and reptile retail outlet called The Aquatic Critter. He was honoured and thanked “…for his financial support of the authors’ research, ethical ornamental-fish business practices, and influence on [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser pelagisch. Tropical

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South America: Venezuela and Colombia.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 8.1 cm SL Männchen/unbestimmt; (Ref. 80502)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 2; Rückenflossenweichstrahlen (insgesamt) : 7; Afterflossenstacheln: 1; Afterflossenweichstrahlen: 3 - 4. This species is distinguished from all its congeners by having the last dorsal-fin ray adnate with adipose fin via a posterior membrane that extends beyond the preadipose plate up to half the length of the adipose-fin spine (vs. membrane separated from preadipose plate by up to two plates or stopping at preadipose plate); further differs from B. niveatus and B. longipinnis by having a naked abdomen (vs. partially plated), and from B. demantoides by having fewer premaxillary teeth (8-36 vs. 34-54, respectively) (Ref. 80502).

This species is collected from the interstices of granitic bedrock and boulders that constitute exposed portions of the Guyana Shield. Apparently feeds on periphyton and associated microfauna that are abundant on surfaces and undersides of rocks in this habitat (Ref. 80502).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Lujan, N.K., M. Arce and J.W. Armbruster, 2009. A new black Baryancistrus with blue sheen from the Upper Orinoco (Siluriformes: Loricariidae). Copeia 2009(1):50-56. (Ref. 80502)

IUCN Rote Liste Status (Ref. 130435: Version 2024-1)

gefährdet, siehe IUCN Red List (VU) (B1ab(iii,v)); Date assessed: 28 July 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01549 (0.00719 - 0.03336), b=2.98 (2.81 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Baryancistrus beggini Lujan, Arce & Armbruster, 2009