Even as the Department of Interior and Local Government ordered the reduction of Taal Lake's fish corrals from 14,000 to a tenable 6,000 to ease fishkill outbreaks, the oxygen level in the volcano lake is dropping to death-bottom, causing more marine species to die, the Bureau of Fisheries and Aquatic Resources (BFAR) said Thursday. Affected marine species include shrimps, crabs, eel and small fishes like "biya", "mu-ang" and "pauto", said Esmeralda Manalang, BFAR's regional director in CALABARZON (Cavite, LAguna, Batangas, Rizal and Quezon). Manalang said that the xygen level in the lake has dropped to 3.71 oarts per million, way below the normal level of 6 PPM.

Pilapil, J., Odronia, C. G., & Capul, C. (2011, June 3). Stinking death spreads out to other species in Taal fishkill. The Manila Times, p. A3.