The Bureau of Fisheries and Aquatic Resources (BFAR) said that the continuous eruption of Taal volcano will put the aquatic life in Taal Lake in danger.
Around 6,000 fish cages were affected by the sulfur upwelling, which occurs when toxic chemicals rise to water surface.
In an interview with DZMM on Tuesday, BFAR Calabarzon Regional Director Sammy Malvas explained that the volcanic activity triggers the change in temperature and acidity in the lake could affect the fishes that thrive there such as Tilapia, Maliputo and the endangered Tawilis.
Sardinella tawilis, which is endemic in Taal Lake, is one of the endangered species according to the International Union for Conservation of Nature (IUCN).
Malvas noted that the case of volcanic eruption is different from the scenarios when the fishes can adapt to such as climate change.
BFAR Calabarzon estimated the damage that the fish cages incurred at 15,033 metric tons.