Classificatie / Namen
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: jurubatibensis: Named for its type locality, in Parque Nacional de Jurubatiba.
More on author: Costa.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical
South America: Brazil.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - 1.8 cm
Max length : 2.6 cm SL mannelijk / geslacht onbekend; (Ref. 78703); 2.6 cm SL (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 6 - 8; Anale zachte stralen: 12 - 13; Wervels: 31 - 32. This species is distinguished from other species in the Rivulus santensis group in having scales in longitudinal series 30-31 (vs. 32-36); caudal fin light yellow, with a dark gray broad margin along the whole fin (except R. nudiventris, vs. absent in R. depressus, R. lazzarotoi, R. simplicis; margin restricted to dorsal and ventral margins of the caudal fin in R. janeiroensis, R, santensis, and R. haraldsiolii; and black margin, middle with bright green and dark reddish brown to black longitudinal lines in R. luelingi); dorsal part of caudal fin base in females with a small, horizontally elongated black spot (vs. rounded or triangular). This species differs from R. nudiventris by having a pelvic fin (vs. none), lesser caudal-fin rays 25-29 (vs. 30-31) and anal-fin rays 12-13 (vs. 14) (Ref. 78703).
Body shape (shape guide): elongated; Cross section: compressed.
The type locality near the lagoon, to Lagoa do Pires, is part of a series of lagoons close to the sea, isolated from river basins. It is an open area of Restinga vegetation, the swamp dense with aquatic vegetation, clear and acidic (pH 5.28) water (Ref. 78703).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Costa, W.J.E.M., 2008. Rivulus jurubatibensis, a new aplocheiloid killifish from the southeastern Brazilian coastal plains (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 19(2):135-140. (Ref. 78703)
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
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Internetbronnen
Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00661 (0.00312 - 0.01398), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |