First of all, some of the dead fishes found in the shorelines of Baseco were actually the hybrid tilapia, locally known as “arroyo”. It belongs to euryhaline species, a type of aquatic organism that can adapt to high levels of salinity. It is not the common tilapia that can be cultured and only suitable in freshwater and low-salinity waters. But most of the dead fishes were Manila Bay’s endemic such as the common whiting or “asohos”, biya, kanduli, among others.
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