Critically Endangered
Duck-billed Buntingi
Adrianichthys kruyti
Duck-billed Buntingi (the duck-billed buntingi or duckbilled buntingi) is a critically endangered (possibly extinct) species of ricefish that is endemic to Lake Poso, Sulawesi, Indonesia.
Appearance
The duck-billed buntingi has 14–16 dorsal soft rays and 24–25 anal soft rays. Its defining characteristic, that separates Adrianichthys from all other members of the family, Adrianichthyidae, is its peculiar "duck-bill," or overhanging upper jaw. It has eyes that protrude above the dorsal profile of its head and are visible from below.
The duck-billed buntingi is on average about 11 cm long but can grow as long as 16 cm in length.
Range and habitat
Duck-billed Buntingi (the duck-billed buntingi or duckbilled buntingi) is a critically endangered (possibly extinct) species of ricefish that is endemic to Lake Poso, Sulawesi, Indonesia.
Some local fisherman living near Lake Poso attribute the duck-billed buntingi's dramatic decrease in population to the massive eruption of Colo Volcano on Una-Una Island in Tomini Bay in 1983.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Diet
Although little is known about their reproductive tendencies, their predators, or who they prey on, one of their closest relatives, the Xenopoecilus poptae, may serve to give us some indication of the duck-billed buntingi's biology.
In crisis
Instead most scientists believe the human introduction of the predatory fishes among them snakehead, Channa striata, and tilapia, Oreochromis mossambicus, most likely led to their present conservation status. The duck-billed buntingi's status on the IUCN Red List changed from critically endangered to possibly extinct in 2019. Historically the species was not closely monitored so it is unclear when the species population began to decrease.
It was listed as endangered until 1996 when Harrison and Stiassny published an article claiming that the duck-billed buntingi could be extinct, that led to the World Conservation Union changing the status of that species from endangered to critically endangered species on the IUCN Red List. Harrison and Stiassny believe that one of the possible causes for the extinction or decline in the A. Kruyti population was an introduced disease or parasite. 1988 Endangered (IUCN Conservation Monitoring Centre 1988) 1990 Endangered (IUCN 1990) 1994 Endangered (Groombridge 1994) 1996 Critically Endangered (IUCN 1996) 2019 Critically Endangered (PE) (IUCN 2019).
Duck-billed Buntingi 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 Duck-billed Buntingi, Wikidata item Q1344556. 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.
