Fishkill hits pond in Isabela town

Posted at 03/20/2012 5:43 PM | Updated as of 03/20/2012 5:46 PM

MANILA, Philippines – A fishkill struck a pond in the town of Alicia, Isabela province, leaving thousands of tilapia dead.

The fishpond’s owner Edwin Mapoy estimated the loss to reach P100,000.

Mapoy suspects that extreme heat triggered the fishkill in his pond in Barangay Sto. Tomas.

Initial findings by the Bureau of Fisheries and Aquatic Resources (BFAR) show that the fishkill may have been caused by the lack of oxygen in the water.

There is also a possibility that the fishkill was caused by the number of phytoplanktons, which also consume oxygen in the water.

“Marumi ‘yung tubig kaya naba-block 'yung oxygen, plus overstocking din siya, nagkarga kasi siya ng 17,000 na isda doon eh mababa 'yung water level,” said Zaide Remocal, BFAR technical staff.

The incident prompted BFAR to closely monitor the quality of water at the Magat reservoir where several fish cages are found.

Authorities said there is a possibility that the massive fishkill that occurred last February 2010 may be replicated.

BFAR advised fish cage operators not to overstock on fish to prevent the occurrence of fishkill. -- Report from Julius Camba, ABS-CBN News