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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Siluriformes (Catfishes) > Heptapteridae (Three-barbeled catfishes)
Etymology: Pimelodella:Diminutive latinized of greek, pimele = fat + Greek, odous, odella = little teeth (Ref. 45335); humeralis:Named for the conspicuous dark blotch in the humeral area, a character not observed in any other nominal species of Pimelodella; an adjective.
Environment: milieu / climate zone / depth range / distribution range Ecology
Maturity: Lm? range ? - ? cm Max length : 95.8 cm TL male/unsexed; (Ref. 118150)
Short description Identification keys | Morphology | Morphometrics
Dorsalspines (total): 1; Dorsalsoft rays (total): 6; Analspines: 4; Analsoft rays: 10 - 11; Vertebrae: 47 - 49. The species is distinguished from its congeners by the following set of characters: with a dark anteriorly oblique blotch in the humeral region, its anterior limit slightly ahead of vertical through the spinelet, and its posterior limit at vertical through the base of second branched dorsal-fin ray; 47-49 total vertebrae; 8-11 retrorse triangular, broad-based and strongly inclined
dentations confined to basal three-fourths of pectoral-fin spine posterior margin; presence of an unpigmented region dorsally and ventrally adjacent to the dark midlateral stripe; maxillary barbels reaching at least the caudal fin insertion; the longest ray of dorsal-fin 18.7-22.5% SL; subequal caudal-fin lobes; dark midlateral stripe narrow, from pseudotympanum to the caudal-fin insertion, dorsal region of body without dark stripes; dorsal fin with hyaline stripe near base, followed distally by a dark stripe, then another hyaline stripe and distalmost two-fifths dark (Ref. 118150).
Body shape (shape guide): elongated; Cross section: oval.
Collected along a sandy beach in the middle stretch of the river. Water parameters during the collection event were: 26.1-26.7ºC; pH 4.25-4.46; conductivity 76-77 mS. (Ref. 118150).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Slobodian, V., A. Akama and G.M. Dutra, 2017. A new species of Pimelodella (Siluriformes: Heptapteridae) from the Guiana Shield, Brazil. Zootaxa 4338(1):85-100. (Ref. 118150)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00397 - 0.01825), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref. 120179): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153): High vulnerability (58 of 100). 🛈
