Brazil country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found only in a single locality, swampy floodplains of stream tributary to Sepotuba River, an upper tributary of the Paraguay River basin at the Parecis Hills (Chapada dos Parecis) in central Brazil (Ref. 76975).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Costa, W.J.E.M., 2007
National Database:

Common names from other countries

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Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: paresi: The specific name paresi refers to the name of an indigenous tribe (Aruák group) formerly inhabiting the Parecis Hills in central Brazil..
More on author: Costa.

Environment: milieu / climate zone / depth range / distribution range Ekologi

; sötvatten bentopelagisk. Tropical

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

South America: swampy floodplains of stream tributary to Sepotuba River, upper Paraguay River basin in central Brazil.

Size / Vikt / Age

Maturity: L_m ? range ? - ? cm
Max length : 2.6 cm hane/ej könsbestämd; (Ref. 76975); 2.3 cm SL (female)

Short description Bestämningsnycklar | Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt) : 8 - 10; Mjukstrålar i analfenan: 12 - 14; Ryggkotor: 29 - 30. Distinguished from all other species of the subgenus Melanorivulus in having small white spots forming a reticulate pattern on the dorsal fin and the basal part of the anal fin, and forming narrow bars on the caudal fin in males, and a narrow basihyal, width about 35% of the basihyal length. Can be diagnosed from all congeners by the unique combination of the following characters: entire flank with a continuous mid-lateral dark gray stripe; scales in longitudinal series 30-31; flank with close red dots, arranged in chevron-like series with the vertex on the mid-lateral line; and caudal fin in males with red bars (Ref. 76975).

Found in a shallow (about 10 cm deep), slightly inclined swamp with slow water current, in open vegetation area (Ref. 76975).

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Main reference Upload your references | referenser | Koordinator : Costa, Wilson J.E.M. | Medarbetare

Costa, W.J.E.M., 2007. Rivulus bororo and R. paresi, two new killifishes from the upper Paraguay River basin, Brazil (Teleostei: Rivulidae). Ichthyol. Explor. Freshwat. 18(4):351-357. (Ref. 76975)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 07 November 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

Ytterligare information

Trophic ecology
Födoslag
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Ecology
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References
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 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): 3.1 ±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).

Melanorivulus paresi (Costa, 2008)