Taxonomic Remarks
Natural history observations in Sazima et al. (2000).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water demersaal. Tropical
South America: Amazon and Paraguay/Paraná River basins.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 2.0 cm SL mannelijk / geslacht onbekend; (Ref. 36693)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 4; Anale zachte stralen: 6. Paired bilateral barbels.
Facultative air-breathing in the genus (Ref. 126274); An air-breather, inhabiting clear water streams with sandy to muddy bottom, up to 2.5 m deep with water flow up to 30 cm/sec. Forages at twilight and night, moving little and preying mostly on chironomid larvae and tiny oligochaetes. When disturbed may bury itself in the sand, diving quickly headfirst and making lateral movements with body. Hides during the day amidst the exposed root tangle and basal portions of submersed aquatic vegetation, and among plant debris on the bottom. A sample of 874 individuals (7.7-16.4 mm SL) taken at the end of the rainy season contains six sexually dimorphic males (14.0-14.6 mm SL) and several presumably adult females (12.8-16.4 mm SL) with up to 300 immature oocytes in each ovary. Sexual ratio of 28 adults (11.9-14.1 mm SL) taken at random is 0.86 males to 1.14 females (Ref. 39865).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Schaefer, S.A., 2003. Scoloplacidae (Spiny dwarf catfishes). p. 310-311. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36693)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
Tools
Speciale rapporten
Download XML
Internetbronnen
Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
2.8 ±0.26 se; based on food items. |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |