Tubli (Derris) contains rotenone, a chemical that is toxic to insects and fish. Rotenone inhibits the respiratory process in the gills of fish.
fishpond
Mariculture Parks Provide Opportunities To Small Scale Fishermen
The Bureau of Fisheries and Aquatic Resources (BFAR) established the first marine culture (mariculture) park in 2000 located in the Island Garden of Samal, east of Davao City, which covers 200 hectares.