Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Pimelodidae (Long-whiskered catfishes)
Etymology: Pimelodus: Greek, pimele = fat + Greek, odous = teeth (Ref. 45335); microstoma: Named for Heraldo A. Britsky (Museu de Zoologia da Universidade de São Paulo)..
More on author: Steindachner.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
South America: Amazon River basin (Ref. 36506) and upper rio Paraná (Ref. 87365).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 33.0 cm SL male/unsexed; (Ref. 114987); max. published weight: 435.00 g (Ref. 114987)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 2; Dorsal soft rays (total): 6; Anal soft rays: 11 - 13; Vertebrae: 43. Distinguished by the following combination of characters: small dots irregularly placed (forming 8-9 rows) and most developed in the anterior two thirds of body; the mouth with thick striated lips; an enlarged posterior branch of the dorsal premaxillary process synchondrally articulated with the lateroanterior margin of mesethmoid; a right-angled posterolateral margin of mesethmoid; the exposed centra of the 7th vertebrae; and a large pharyngobranchial 3 with a well developed dorsal crest. Differs from P. fur in possessing more gill rakers on the first arch (19-22 vs. 16-18) and a wider mouth (32.0-35.1% HL vs. 24.6--30); and from P. absconditus in having a larger interorbital distance (22.2-29.2% HL vs. 18.6-22.7), a relatively smaller ratio between orbital diameter and interorbital width (70.8-115.0 vs. 104.1-148.9); a shallower body (19.0-24.5% SL vs. 21.6-26.9), a shorter head (25.8-28.9% SL vs. 27.5-30.8), a smaller predorsal length (36.2-39.9% SL vs. 38.7-42.9) and a smaller prepelvic length (47.4-51.0% SL vs. 49.3-53.1). Vomerine tooth plates occasionally develop in P. heroldi while they are always present in P. absconditus and absent in P. fur (Ref. 41259).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Lundberg, J.G. and M.W. Littmann, 2003. Pimelodidae (Long-whiskered catfishes). p. 432-446. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36506)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00383 - 0.01090), b=3.11 (2.97 - 3.25), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
