An evaluation of the fishery resources of Laguna de Bay was conducted by the Freshwater Investigation Unit. The study was undertaken from 1961 to 1963.
The evaluation was based on the catch data of the major fishing gears used in the lake. These were the gill nets (pante), fish corrals (baklad), drive-in-nets (seket), push nets [both motorized (turo) and manual (sakag)l, shrimp brush shelters (bonbon ng hipon), drag seines (pukot), and snail dredges (kalad- kad suso). Net-run and landed fish catch samples were collected from these gears.
The evaluation revealed that the aggregate annual production of fish in Laguna de Bay during the period of study averaged 82,881,595 kg valued at P24,976,980.
The main part of this evaluation is a discussion of the production of the seven most important fishing gears in the lake.