Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Loricariidae
(Armored catfishes) > Loricariinae
Etymology: Loricaria: Latin, lorica, loricare = cuirass of corslet of leather; 1706 + Greek, ichthys = fish (Ref. 45335); pumila: From the Latin 'pumilus', meaning dwarf, alluding to the small adult size of this species, particularly among Loricaria.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; depth range 3 - 29 m (Ref. 79031). Tropical
South America: Brazil in Rio Amazonas near the mouth of rio Tapajós and rio Pará adjacent to and including lower rio Tocantins.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.1 cm SL male/unsexed; (Ref. 79031)
Morphology | Morphometrics
Differs from all congeners, except Loricaria nickeriensis, by attaining a small adult size, reaching sexual maturity at less than 8.0 cm SL. Distinguished further from Loricaria nickeriensis and Amazon basin Loricaria by the following combination of characters: surfaces of head with prominent crests and predorsal plates with numerous well developed odontodes arranged in conspicuous linear rows; anterior abdominal area covering pectoral girdle naked, with occasional small isolated plates at bases of pectoral fins, pre-anal shield and space between lateral abdominal plates with large polygonal plates; total plates in lateral series 31-32 (modally 31); and post-anal plates 18-19 (modally 18). One specimen from the lower rio Tocantins differs from other collected specimens from the lower Amazon by having a larger eye and maximum orbital diameter of 20.4% HL (vs. 15.4-17.7% HL) and lightly developed iris operculum (vs. absent); and conspicuous pigment pattern consisting of brown blotches on the head and fins with five dark saddles on the dorsum of the body (vs. patterns in Amazon specimens similar, but diffuse) (Ref. 79031).
Reportedly collected using bottom trawls at depths from 3 to 29 m and at distances of 15 to 1500 m from the shoreline, as well as over silt and organic detritus. Aquatic insect larva, sclerotized body parts of unidentified insects, organic detritus and sand were found in the stomach contents of a single specimen measuring 7.31 cm SL (Ref. 79031).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Thomas, M.R. and L.H. Rapp Py-Daniel, 2008. Three new species of the armored catfish genus Loricaria (Siluriformes: Loricariidae) from river channels of the Amazon basin. Neotrop. Ichthyol. 6(3):379-394. (Ref. 79031)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00153 - 0.00788), b=3.16 (2.98 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.6 ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .