Critically Endangered
Leptolebias opalescens
Leptolebias opalescens
Leptolebias opalescens, also known as the opal pearlfish, annual tropical killifish or opalescent pearlfish, is a killifish in the family Aplocheilidae endemic to Brazil.
The killifish
Leptolebias opalescens is a killifish in the family Rivulidae (order Cyprinodontiformes).
Range and habitat
Leptolebias opalescens, also known as the opal pearlfish, annual tropical killifish or opalescent pearlfish, is a killifish in the family Aplocheilidae endemic to Brazil.
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
Leptolebias opalescens is Critically 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 English Wikipedia article on Leptolebias opalescens, Wikidata item Q1940576. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
