The population of invasive species called "knife fish" in the Laguna de Bay has reached 10,000 kilograms, prompting national and local agencies and private companies to intensify effort to contain the infestation. " For every kilo of our indigenous fish species in Laguna De Bay, which amounts up to P1,050. Thus, if we have a daily catch of 10 tons of knife fish, that means we are losing 70 tons of other fish species including Biya, bangus, tilapia, and shrimps everyday," Bureau of Fisheries and Aquatic Resource (BFAR) Director Asis Perez pointed out.

De Vera, E. B. (2013, June 25). Gov't addresses bay's knife fish' infestation. Manila Bulletin, p. B-8.