Laguna (province) producing of fish. Carp and tilapia fingerlings are also being grown in inland ponds and freshwater fish pens. There are a total of 457 operators utilizing an area of for fish pens and fish cages. Aside from the Laguna de Bay, approximately 12% of the area in the Seven Lakes of San Pablo is being used for aquaculture. Laguna is home to twenty-one economic zones as registered under the Philippine Economic Zone Authority. Most of these economic zones are located in Santa Rosa, Biñan, and Calamba. The largest economic zone in Laguna is the Laguna Technopark, located in Santa Rosa
Laguna de Bay Talim, which falls under the jurisdiction of the towns of Binangonan and Cardona in Rizal province. The lake is one of the primary sources of freshwater fish in the country. Its water drains to Manila Bay via the Pasig River. Laguna de Bay means "Lagoon of [the town of] Bay" for the lakeshore town of Bay (pronounced as "Bä'ï"), the former provincial capital of Laguna province. Alternate spellings of the town's name include "Bae" or "Ba-i", and in the early colonial times, "Bayi" or "Vahi". Thus, the lake is sometimes spelled as "Laguna de Bae" or "Laguna de Ba-i", mostly