Classification / Names
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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
Οικολογία
; Γλυκού νερού βενθοπελαγικό; pH range: 2.8 - 2.9. Tropical; 17°C - 20°C (Ref. 92077)
South America: Brazil.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.4 cm SL αρσενικό/απροσδιόριστο; (Ref. 92077)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 1; Μαλακές ραχιαίες ακτίνες (συνολικά) : 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).
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
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
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 2024-2)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [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).
