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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: Trigonectes: Greek, trygon = a sting ray + Greek, nekton = swimmer (Ref. 45335); rubromarginatus: From the Latin ruber (red) and marginatus (with margin), referring to the red stripe along the ventral margin of the caudal fin (Ref. 26656).
More on author: Costa.

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

; süßwasser benthopelagisch; standorttreu. Tropical; 23°C - 27°C (Ref. 13614)

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

South America: Araguaia River basin, Brazil.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 12.0 cm TL Männchen/unbestimmt; (Ref. 27139)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenweichstrahlen (insgesamt): 10-14; Afterflossenweichstrahlen: 16 - 18. Distinguished from other species of the genus, except T. strigabundus, by having straight mouth cleft. Differs from T. strigabundus and all other species of the genus by the elongated pelvic fin of the males, whose tip is reaching to the base of 11th to 15th anal rays and the presence of a bright red stripe along the ventral margin of the male caudal fin. Seems to differ from T. strigabundus by having a larger size (Ref. 26656).

Bottom spawner, 8 months incubation (Ref. 27139).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator : Costa, Wilson J.E.M. | Partner

Costa, W.J.E.M., 1990. Systematics and distribution of the neotropical annual fish genus Trigonectes (Cyprinodontiformes, Rivulidae), with description of two new species. Ichthyol. Explor. Freshwat. 1(2):135-150. (Ref. 26656)

IUCN Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

FAO - Publication: search | FishSource |

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Ökologie
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Ökotoxikologie
Fortpflanzung
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Ablaichen
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Fecundity
Eier
Eientwicklung

Alter/Größe
Wachstum
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Längenhäufigkeiten
Morphometrie
Morphologie
Larven
Larven Pop.Dyn.
Rekrutierung
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BRUVS

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00977 (0.00315 - 0.03034), b=3.03 (2.78 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Trigonectes rubromarginatus Costa, 1990