Gephyrocharax torresi

Gephyrocharax torresi Vanegas-Ríos, Azpelicueta. Mirande & García Gonzales, 2013

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Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Stevardiidae (Stevardiids) > Stevardiinae
Etymology: Gephyrocharax: Greek, gephyra = bridge + Greek, charax = a marine fish without identification (Ref. 45335)torresi: The name is treated as a patronym in gratitude and recognition of Mauricio Torres who collected the material on which the description is based.
Eponymy: Mauricio Torres-Mejia is an ichthyologist and ecologist at Universidad Industrial de Santander, Colombia. [...] (Ref. 128868), visit book page.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

; zoet water demersaal. Tropical

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South America: Río Cascajales basin, río Magdalena system in Colombia.

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 3.7 cm SL mannelijk / geslacht onbekend; (Ref. 93810); 4.2 cm SL (female)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale zachte stralen (totaal) : 9 - 10; Wervels: 40 - 41. This species is easily diagnosed from other species of Gephyrocharax, except G. melanocheir, by the absence or vestigial adipose fin (vs. presence of a well developed adipose fin), the form of lateral branched pectoral-fin ray of males which has a highly developed branching pattern that distally forms a fan-shaped structure with minute branches (vs. less extensive branching pattern not distally forming a fan-shaped structure with such minute branches), and the distal portion of this pectoral-fin ray in males with minute bony hooks (vs. hooks absent) and a dark blotch or a few scattered dark brown chromatophores along its branches (vs. blotch or chromatophores absent). It differs from G. melanocheir by the following characters: intense black pigmentation at the base of the anterior five dorsal-fin rays absent (vs. present); 40-41 vertebrae (vs. 38-39); frontals contacting each other anterior to epiphyseal bar in adults (vs. the absence of contact); the posterior margin of the mesethmoid straight in its central portion (vs. strongly concave at this point); the pouch scale of mature males reaching caudal-fin ray 11 or the area between caudal-fin rays 11 and 12 (vs. reaching only to caudal fin ray 10 or the area between caudal-fin rays 9 and 10); 60-88 minute terminal branches of the lateral branched pectoral-fin ray of mature males (vs. 28-54); the longer midlateral black body stripe in males, reaching to the base of the caudal-fin rays (vs. reaching to the middle of the caudal peduncle); and the snout length 28.3-31.8% HL (vs. 22.1-28.0% HL) (Ref. 93810).
Body shape (shape guide): fusiform / normal.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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Vanegas-Ríos, J.A., M.d.l.M. Azpelicueta, J.M. Mirande and M.D.G. Gonzalez, 2013. Gephyrocharax torresi (Characiformes: Characidae: Stevardiinae) , a new species from the río Cascajales basin, río Magdalena system, Colombia. Neotrop. Ichthyol. 11(2):275-284. (Ref. 93810)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Onvoldoende gegevens (DD) ; Date assessed: 10 October 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00475 - 0.03337), b=3.04 (2.81 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.0   ±0.4 se; based on size and trophs of closest relatives
Kwetsbaarheid van de visserij (Ref. 59153):  Low vulnerability (10 of 100). 🛈