Conservation Actions

There is no information on the conservation measures in place for this species. If it is still extant within Lake Poso, research and monitoring of its population is highly recommended alongside education of local people to highlight the importance of this endemic species and invasive species control.

Location Information

This species is endemic to Lake Poso in central Sulawesi, Indonesia (Parenti and Soeroto 2004, Parenti 2008). This species was not found in the lake in 2012 (Mokodongan and Yamahira 2015) and surveys in 2017 also failed to recover this species (Kobayasi and Mokodongan pers. obs. 2017). This species is therefore considered to be possibly extinct within the lake. 

Population Information

This species has not been recorded in Lake Poso since 1983 and could likely be extinct, possibly due to invasive species and their introduced diseases and parasites (Kottelat and Whitten 1996, Harrison and Stiassny 1999, Parenti 2011). Surveys in 2012 and 2017 did not recover this species (Mokodongan and Yamahira 2015, Kobayasi and Mokodongan pers. obs. 2017), although Larson et al. (2014) reported that local people had occasionally still found 'buntini' or 'buntingi', a common name for this species and the related Adrianichthys roseni, in the lake at low abundances in late 2012 and 2013. Due to this, it is likely that there are fewer than 50 mature individuals left within the lake, but more fieldwork is required to determine if this species is still extant in Lake Poso.

Threats

This species was last recorded in 1983 and may be extinct in Lake Poso. The potential disappearance of this species is thought to be attributed to volcanic and tectonic activities that occurred within the region in 1983. Local people reported large numbers of lake species being washed ashore in drifts that may have been caused by gases being released within the lake (Larson 2001, Larson et al. 2014). Due to geographic location, this remains a possible threat that could occur again in the future, potentially impacting the entire global population of lake endemics. Additionally, unknown invasive species and their parasites and diseases are listed as a likely cause of their population decline (Kottelat and Whitten 1996, Harrison and Stiassny 1999, Parenti 2011). Many invasive species, such as the Common Carp (Cyprinus carpio) and Nile Tilapia (Oreochromis niloticus), have been recorded in this lake. A. kruyti is also thought to have been overfished by local people, and if still extant would be threatened by fishing at night using lights (M.T. Gundo pers. comm. 2017). Deforestation surrounding the lake is likely to reduce water quality due to increases in runoff causing sedimentation and potentially introducing chemical herbicides and pesticides (J. Sulfani Udin pers. comm. 2019).

IUCN Red List Account Link

Please click here to see the species' IUCN Red List Account page.