The Department of Environment (DoE) is investigating the cause of dead fish in Sungai Damansara as reported in social media yesterday.

Selangor DoE director Nor Aziah Jaafar said the dead fish, mainly suckermouth catfish (Hypostomus plecostomus) and Mozambique tilapia (Oreochromis mossambicus), were found over a five-kilometre stretch of the river.