Trigonectesis agenusoffishin thefamilyRivulidae.These annualkillifishareendemicto theParaguay,upperMadeira(Beni,GuaporéandMamoré) andTocantinsbasins in far northern Argentina, Bolivia, central Brazil and western Paraguay.[2][3]They inhabit seasonal swamp, pools and similar habitats in open regions (for example, savanna). Once the water disappears, the adults die, but the eggs that have been laid in the bottom remain, only hatching after several months (up to a year) when the water returns.[2][4]
| Trigonectes | |
|---|---|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cyprinodontiformes |
| Family: | Rivulidae |
| Genus: | Trigonectes G. S. Myers,1925 |
| Type species | |
| Trigonectes strigabundus Myers 1925[1]
| |
They are relatively large killifish that are up to 8–16 cm (3.1–6.3 in) intotal lengthdepending on the exact species.[5]
Species
editThere are currently 6 species in this genus:[5]
References
edit- ^Eschmeyer, William N.;Fricke, Ron & van der Laan, Richard (eds.)."Trigonectes".Catalog of Fishes.California Academy of Sciences.Retrieved16 September2019.
- ^abCosta, W.J.E.M. (1990). "Systematics and distribution of the neotropical annual fish genus Trigonectes (Cyprinodontiformes, Rivulidae), with description of two new species".Ichthyological Exploration of Freshwaters.12:135–150.
- ^Alonso, F. (2005). "Captura de killis en Salta".Boletín del Killi Club Argentino.10:7–13.
- ^Vermeulen, F."Trigonectes balzanii, (Perugia, 1891)".itrainsfishes.net.Retrieved11 November2018.
- ^abFroese, Rainer;Pauly, Daniel (eds.)."Species in genusTrigonectes".FishBase.November 2018 version.
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