Water pollution and not blast fishing caused the recent case of fish kill off Las Piñas and Parañaque in Manila Bay where at least 30 tubs of dead fish were found along the coastline, the Bureau of Fisheries and Aquatic Resources said Saturday. “We need to find the source of the pollution. Like what we always say, we need to keep our waters clean to preserve marine life,” said BFAR Region 4A director Sammy Malvas said. He said water quality tests showed poor levels of dissolved oxygen and elevated levels of ammonia and phosphates that could come from animal waste and domestic sewage. The ammonia in the water supply might have also come from agricultural, domestic and industrial wastes.

Cruz, M. V. (2019, October 13). BFAR: Pollution caused fish kill. Manila Standard, p. A4.