Semah fish teeming in Baleh River

Khairulazman extracting DNA samples of a fish from upper Baleh River using molecular biology technique.

KUCHING: The semah, commonly found in Sarawak, is thriving in the headwaters of the Baleh River deep in the Heart of Borneo, according to researchers.

The yellowish-gold fish has been found to dominate the Upper Baleh River, more than other freshwater fish species from the loach family.