Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Peckoltia: Because of Gustavo Peckolt,member of the Natural History Commission of Rondon (Ref. 45335); amjikin: Name 'amjikin' refers to the a state of happiness for the Krahô people, speakers of the Timbira language. A noun in apposition.
Eponymy: Gustavo Peckolt (1861–1923) was a Brazilian-born German botanist and pharmacist. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.5 cm SL male/unsexed; (Ref. 138240)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal soft rays: 4. This species is distinguished from its congeners by the following set of characters: absence of spots or blotches on head and body; lower lips with rounded papillae; elongated odontodes on cheeks reaching the pectoral-fin spine when adpressed to body; space between the eyes not entirely covered by a blotch; parieto supraoccipital moderately elevated not forming an apparent crest; diminute plates with short odontodes on base of pectoral fins and anterior part of urogenital opening; prominent lateral wall of metapterygoid channel with sturdy base, including sinuous edges; adductor palatine crest forming a diminute, almost perceptible salient; upper and lower jaws with <25 teeth; seven saddles along the body; four oblique bars on body behind head, reaching further midventral plate rows series without fading; dark bars crossing membranes of dorsal fin; and yellow stripes of the head obliquely positioned on head, not larger than eye orbit (Ref. 138240).
Body shape (shape guide): elongated; Cross section: oval.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Araújo, F.A.A., M.F.C. Ferreira, A.N. Silva and W.B. Wosiacki, 2025. A new species of Peckoltia (Siluriformes, Loricariidae) from the rapids of the Rio Tocantins-Araguaia basin, Brazil. J. Fish Biol. 1-10. (Ref. 138240)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
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].
Bayesian length-weight: a=0.01549 (0.00726 - 0.03306), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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