Classification / Names
Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: guanabarensis: The specific name is in reference to the occurrence of the new species in river drainages flowing into the Guanabara bay..
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk. Tropical
South America: river drainages flowing into the Guanabara bay, and adjacent coastal plains to west, including the Jacarepaguá lagoon system in Rio de Janeiro, Brazil.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL hane/ej könsbestämd; (Ref. 102354); 3.1 cm SL (female)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 7 - 9; Mjukstrålar i analfenan: 14 - 16; Ryggkotor: 33 - 34. Atlantirivulus guanabarensis can be diagnosed from all species of the genus Atlantirivulus by the following combination of characters: lateral line divided into two sections (vs. single); lateral line with one neuromast by scale (vs. lateral line often interrupted by scales without neuromasts); 22 - 26 neuromasts in the section of infraorbital series around orbit (vs. usually 17 - 22, sometimes 23 or 24); distal margin of the anal fin and ventral margin of the caudal fin with a narrow, well-defined dark reddish grey stripe in males (vs. never a similar color pattern), melanophore patch on the postorbital region extending ventrally to the pre-opercular series of neuromasts (vs. not reaching pre-opercular series of neuromasts); snout blunt (vs. slightly pointed); ventral portion of head and venter white (vs. orangish yellow); flank without triangular light blue spots in males (vs. present); and base of the dorsal and anal fins without grey reticulum in males (vs. present) (Ref. 102354).
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
Costa, W.J.E.M., 2014. Four new species of the genus Atlantirivulus (Cyprinodontiformes: Rivulidae) from the Brazilian Atlantic Forest. Verteb. Zool. 64(1):9-21. (Ref. 102354)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00311 - 0.01404), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
