Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Pareiorhina: Greek, pareia = jaw + Greek, rhinos = nose (Ref. 45335); cepta: Name derived from CEPTA (an acronym for Centro de Pesquisa Treinamento em Aquacultura; formerly Centro Nacional de Pesquisa e Conservação de Peixes Continentais) from municipality of Pirassununga, São Paulo State.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; pH range: 2.8 - 2.9. Tropical; 17°C - 20°C (Ref. 92077)
South America: Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.4 cm SL male/unsexed; (Ref. 92077)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 1; Dorsal soft rays (total): 7. This species is distinguished from its congeners by having small plates covered with odontodes randomly distributed on the abdomen (vs. abdomen completely naked) and by color pattern of caudal-fin completely dark with one hyaline bar (vs. variegated blotches corresponding to approximately 3-4 hyaline bars in P. brachyrhyncha and P. rudolphi and hyaline random spots in P. carrancas. It differs from all congeners, except for P. brachyrhyncha, by presence of a minute lateral cusp in teeth (vs. unicuspid teeth in remaining species); from all congeners, except for P. carrancas, by having ventral surfaces of first pectoral, pelvic and anal-fin rays covered by pointed odontodes (vs. conspicuously spatulate odontodes); from P. carrancas by lacking a ridge on the postdorsal surface of trunk (vs. postdorsal surface of trunk with a low, elongate ridge formed by 10-13 raised median unpaired plates), anterior ends of the premaxillae and dentaries gently sloped inwards (vs. strongly sloped); from P. brachyrhyncha by lacking odontodes at the ventral tip of the snout (vs. tip of snout completely covered by odontodes) (Ref. 92077).
Body shape (shape guide): elongated.
The species was collected an altitude of about 810-1065 m.a.s.l. The streams narrow (about 3-5 m width) and shallow (about 0.25-1.5 m deep) and the bottom was formed of small to medium-sized rocks, loose stones, gravel and sand. The water in the collection site was clear, cold (16.6°C-19.5°C), highly acidic (pH 2.78-2.87), poorly conductive (µs/cm 0.013-0.014), highly oxygenated (5.91-13.05 mg/l OD) and moderate to fast flowing. Vegetation found at the margins of the stream, which shadows a wide portion of its bed. Associated species captured in the stream includes Astyanax rivularis, Neoplecostomus franciscoensis, Trichomycterus macrotrichopterus and Characidium fasciatum (Ref. 92077).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Roxo, F.F., G. de Souza da Costa e Silva, C. Oliveira and C.H. Zawadzki, 2012. Description of a new species of Pareiorhina (Siluriformes: Neoplecostominae) from Rio São Francisco basin. Zootaxa 3512:64-74. (Ref. 92077)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00374 - 0.01935), b=3.09 (2.90 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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