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); guato: Name 'guato' in honor of the indigenous Guató people who historically inhabited the type locality.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 12.8 cm SL male/unsexed; (Ref. 132465)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 2; Dorsal soft rays (total): 6; Anal soft rays: 7 - 8; Vertebrae: 41 - 42. This species is distinguished by the following set of characters: long maxillary barbel, reaching at least the anal-fin terminus when parallel to main body axis; supraoccipital process reaching the anterior nuchal plate; robust dorsal-fin spine, bearing small, straight spinules along three-fourths of its posterior margin; 41–42 (rarely 43 or 44) total vertebrae; body slightly darkened, dorsal fin with light brown stripe near its origin, followed by a hyaline stripe, and distal half dark and by the dorsal lamina of the Weberian apparatus reaching the ventral margin of the supraoccipital process only at its first third; preoperculomandibular laterosensory canal openings at dentary not particularly large; brown midlateral stripe wide and dorsal lamina of the Weberian apparatus reaching the ventral margin of the supraoccipital process only at its first third; posterior margin of pectoral-fin spine bearing 13-23 large, retrorse blades along basal two-thirds; adipose fin 2.5 to 3.0 times in SL; epiphyseal branch of supraorbital canal on the head (S6) emerging as a single pore (Ref. 132465).
Body shape (shape guide): elongated; Cross section: oval.
The species inhabits shallow, moderately flowing waters with sandy substrate. They are observed to be abundant during the rainy season and is easy to catch at night (Ref. 132465).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Pierre, V. and V. Slobodian, 2024. A new species of Pimelodella (Siluriformes: Heptapteridae) from the Paraguai basin, Brazil, with a discussion regarding its distribution. Neotrop. Ichthyol. 2024; 22(1):e230110. (Ref. 132465)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
Tools
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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].
Trophic level (Ref.
69278): 3.6 ±0.5 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 vulnerability (10 of 100).
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