Classification / Names
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Siluriformes (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
Etymology: Heptapterus: Greek, epta = seven + Greek, pteron = wing, fin (Ref. 45335); qenqo: Name derived from the Quechua language meaning serpentine or sinuous, in allusion to the swimming movements of this species; adjective, singular and masculine.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce. Tropical
South America: Argentina.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 21.3 cm SL maschio/sesso non determinato; (Ref. 86258)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 6; Raggi anali molli: 11 - 13; Vertebre: 51 - 52. This species is distinguished by the following characters: a small serrae on the anterior proximal margin of first pectoral-fin ray; anal-fin rays iv-v, 11-13 (15-17 total); adipose-fin base relatively short (40.9-47.4% SL); small eyes (7.4-14.2% HL); adipose fin is confluent to caudal fin; maxillary barbel not reaching pectoral-fin base in adults and reaching or scarcely surpassing first pectoral-fin ray in small juveniles (Ref. 86258).
This species inhabits well-oxygenated rivers and streams, with gravel substratum and moderate to rapid flowing waters. Individuals usually shelter under large rocks. Apparently solitary and only a few specimens are usually captured per collecting site (Ref. 86258).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Aguilera, G., J.M. Mirande and M.M. Azpelicueta, 2011. A new species of Heptapterus Bleeker 1858 (Siluriformes, Heptapteridae) from the Río Salí basin, north-western Argentina. J. Fish Biol. 78(1):240-250. (Ref. 86258)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00374 - 0.01688), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (16 of 100).
