Rhamdella cainguae

Rhamdella cainguae Bockmann & Miquelarena, 2008

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drawing shows typical species in Heptapteridae.

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> Siluriformes (Catfishes) > Heptapteridae (Three-barbeled catfishes)
Etymology: Rhamdella: Brazilian vernacular name, Nhamdia/Jamdia (Ref. 45335)cainguae: Named from the Guarani, ca'á (forest), and iguá (inhabitant), in reference to the Cainguá, indigenous people of northeastern Argentina.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

; zoet water demersaal. Subtropical

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

South America: known only from Arroyo Cuña-Pirú, Río Paraná basin in Argentina.

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 15.8 cm SL mannelijk / geslacht onbekend; (Ref. 75872)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale zachte stralen (totaal) : 7 - 8; Anale zachte stralen: 16 - 18. Presence of a distinct and large ovoid area in the supraorbital laterosensory canal between the frontal and sphenotic delimited by the apparently slender dorsal walls of these bones and with foramen for a laterosensory branch. Differs further from other species of Rhamdella by the following combination of characters: barbel tip reaching from the base of pectoral-fin ray in a specimen measuring 8.80 cm SL, to the posterior portion of opercular region, not surpassing the branchial slit, in a 15.75 cm SL specimen; horizontal eye diameter 20.6-23.9% of HL; interorbital distance 17.9-20.7% of HL; snout profile slightly convex but almost straight; branchiostegal rays seven, branchiostegal membranes not reaching the basal part of the first pectoral-fin ray in most specimens; interdorsal length 7.6-11.3% of SL; adipose-fin base length 36.0-41.6% of SL; anal-fin base length 16.6-22.0% of SL; anal-fin rays 16-18, commonly 17; and length of ventral caudal-fin lobe is 55.8-65.5% of length of dorsal lobe in males; snout length 37.9-43.2% of HL; pelvic fin length 13.3-16.9% of SL; a dense concentration of long and slender papillae on the lateral body surface in the pectoral and abdominal regions, most conspicuous near the lateral line, resulting in a hairy aspect; and by the presence of a distinct narrow dark mid lateral stripe (Ref. 75872).
Body shape (shape guide): elongated.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Occurs over rocky bottoms in a clear water stream, approximately 0.5 - 1 m deep, with pools around 3 m deep, running through a densely forested area (Ref. 75872). Tends to be gregarious as individuals were observed in dense group under large stones (Ref. 75872).

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

Hoofdreferentie Upload uw referenties | Referenties | Coördinator : Bockmann, Flavio | Medewerkers

Bockmann, F.A. and A.M. Miquelarena, 2008. Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae). Zootaxa 1780:1-54. (Ref. 75872)

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

  Kwetsbaar (VU) (B1ab(iii)); Date assessed: 24 November 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00813 (0.00374 - 0.01767), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
3.5   ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen
(Ref. 120179)
laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid van de visserij
(Ref. 59153)
Moderate to high vulnerability (46 of 100). 🛈