Endangered
Austrolebias viarius
Austrolebias viarius
Austrolebias viarius is a killifish in the family Rivulidae (order Cyprinodontiformes), recorded as Endangered and tied to Uruguay.
The killifish
It was first described by Vaz-ferreira, Sierra de Soriano ug Scaglia de Paulete in 1965.
New World rivulids include annual killifish that survive a dry season as eggs in mud, and non-annual forest-stream forms.
Killifish, livebearers, and splitfins — small-bodied freshwater fishes, many of them from a single lake, spring, or seasonal pool.
Range and habitat
Austrolebias viarius is recorded from Uruguay.
GBIF currently lists 1,024 occurrence points. Those points follow where people logged the taxon — museum drawers and surveys included — not a closed range boundary.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Breeding
Annual rivulids hatch, breed, and die in one wet season; the eggs wait in the mud. Non-annual species live in forest streams year-round.
Small desert or forest fishes in this order live in water that can vanish. The egg bank, if there is one, is the only reserve.
In crisis
Austrolebias viarius is Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the Cebuano Wikipedia article on Austrolebias viarius, translated and retold in English, plus Wikidata item Q5687409 and GBIF occurrence geography. Family and order context is original field-guide writing about the group. Wikipedia text is CC BY-SA. Not an IUCN assessment. Confirm status and range on iucnredlist.org.
