| Duck-Billed Buntingi | |
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| Species: | A. kruyti
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| Binomial name | |
| Andrianichthys kruyti Weber, 1913
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Description
Discovered in 1913, the Adrianichthys kruyti, or the "Duck-Billed Buntingi," is on average about 11cm long[1] but can grow as long as 16cm in length.[2] They were sometimes caught by local fishermen and eaten[1]. The A. kruyti feature 14-16 dorsal soft rays and 24-25 anal soft rays. It is defined by and differs from all other members of the family by its peculiar duck-bill, overhanging upper jaw, eyes protruding above dorsal profile of head and visible from below. Other diagnostic characters include 14-16 rays in dorsal fin and about 75 scales in lateral row (Ref. 26747).[2]
Conservation
Some local fisherman living near Lake Poso attribute the A. kruyti's dramatic decrease in population to the massive eruption of Colo Volcano on Una-Una Island in Tomini Bay in 1983[1]. This unlikely to be the case. Instead most scientists believe the human introduction of the predatory fishes including snakehad, Channa striata, and tilapia, Oreochromis mossambicus, most likely lead to their present conservation status.
Conservation Status
The A. kruyti status on the IUCN Red List changed from "endangered" to "critically endangered" in 1996.[3] 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 A. kruyti could be extinct, which led to the World Conservation Union changing the status of the A kruyti from "endangered" to "critically endangered" on the IUCN Red List.[3] The matter has been referred to the relevant Specialist Group for a decision. [3]
Conservation History
Distribution/Ecology
The Adrianichthys Kruyti is one of two fish endemic to Lake Poso, Indonesia.[3] A. kruyti live in freshwater, pelagic, pH range: 7.5 – 8.5.[2]
References
- ^ a b c Whitten et al: "One or More Extinctions from Sulawesi, Indonesia?". Conservation Biology, 1987
- ^ a b c Cruz, Tess. "Adrianichthys kruyti: Duckbilled Buntingi". www.fishbase.org. Accessed April 23, 2007.
- ^ a b c d Kottelat, M. 1996. "Adrianichthys kruyti". In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Accessed 22 April 2007.
- "Adrainichthys kruyti." ITIS Report Website. Accessed April 23, 2007.
- Cruz, Tess. "Adrianichthys kruyti: Duckbilled Buntingi". www.fishbase.org. Accessed April 23, 2007.
- Kottelat, M. 1996. "Adrianichthys kruyti". In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Accessed 22 April 2007.
- Whitten et al. 1987. "One or More Extinctions from Sulawesi, Indonesia?", Conservation Biology, Vol. 1 No. 1 (May, 1987), pp. 42-48.