Some of the Schistura fish species discovered in Laos.  --Photo National Agriculture, Forestry and Rural Development Research Institute

Lao researchers discover five new fish species

Hidden within the streams and tributaries of the Mekong River Basin, five unique species of Schistura fish have been identified by scientists, with four of them carrying the names of Lao researchers and one named after the Bolaven Plateau.
The discoveries highlight Laos’ remarkable freshwater biodiversity and reflect the growing international recognition of Lao scientists’ contributions to aquatic research.
According to the National Agriculture, Forestry and Rural Development Research Institute (NAFRI), the discoveries are the result of decades of collaborative research led by the Fisheries Research Centre in partnership with the Mekong River Commission (MRC) and international ichthyologists.
Since 1999, researchers have conducted extensive surveys of the Mekong River Basin and its tributaries, documenting an estimated 1,000 to 1,200 fish species.
Among the basin’s most diverse groups is the genus Schistura, commonly known as stone loaches, which has yielded numerous species new to science.
Five notable Schistura species discovered in Laos have received names that reflect either the contributions of prominent Lao individuals or the locations where the species were first found
Schistura kongphengi was named in honour of Lao researcher Kongpheng Bouakhamvongsa. The species was discovered in the Nam Theun and Nam Xebangfai rivers in Khammuan province and was formally described by Maurice Kottelat in 1998.
Schistura khamtanhi commemorates Lao researcher Khamtanh Vattanatham. The species was described by Kottelat in 2000.
Schistura kaysonei honours Kaysone Phomvihane, leader of the Lao Revolution. The species was described by Vidthayanon and Jaruthanin in 2002.
Schistura thavonei recognises Thavone Phommavong, a Lao researcher from the Fisheries Research Centre.
Measuring approximately 44.0 millimetres in standard length, the species was discovered in the Nam Ma River in Luang Namtha province and described by Kottelat in 2017.
Schistura bolavenensis derives its species name from the Bolaven Plateau, where it was first discovered. The species was formally described by Kottelat in 2000.
The naming of these species reflects an important scientific tradition of recognising individuals who have advanced research and conservation, while also highlighting the ecological significance of the regions where new species are found.
NAFRI staff said the discoveries demonstrate Laos’ exceptional freshwater biodiversity and reinforce the country’s importance as a centre for scientific research in the Mekong region.
The findings also showcase the valuable role of Lao researchers in documenting, understanding, and conserving aquatic biodiversity, earning recognition within the international scientific community.

By Times Reporters
 (Latest Update July 17, 2026)