Aquaculture production of Ilocos Region posted a production  of 70,587 metric tons in the 4^th quarter 2020. This is 16.53 percent  higher than the production in 4^th quarter 2019 of 60,572 metric tons.  All provinces contributed to the overall increment of the volume  of production in the aquaculture subsector.

The province of Pangasinan contributed 98.37 percent  to the region’s aquaculture output for the 4^th quarter 2020.  The province recorded 69,435 metric tons, higher than the output  in 4^th quarter 2019 of 59,724 metric tons. Early harvest in November  and availability of fingerlings during the stocking period resulted to higher volume of production.

La Union shared 1.41 percent to the total aquaculture fisheries production in 4^th quarter 2020, that is 997 metric tons, higher than the output  in the same level a year ago of 704 metric tons. Early stocking in marine pens and bigger sizes of catch contributed to the increment of output.   

Ilocos Sur which shared 0.20 percent to the total aquaculture fish catch  of the region in 4^th quarter 2020 posted increment in output.  From the 127 metric tons recorded in the same period of 2019, it went up to 138 metric tons due to good water parameters, continues dispersal       of free fingerlings and fishnet from Local Government Units, and lesser destructive typhoons. 

The province of Ilocos Norte contributed 0.02 percent to the total aquaculture fisheries volume of production in the 4^th quarter 2020.  Its production during the period went up by 8.08 percent  from the 16 metric tons output a year ago. Lesser destructive typhoons, availability of residual harvest, and bigger sizes of catch caused higher output in the 4^th quarter 2020.

Marine cage shared a bulk of 87.79 percent share to the overall aquaculture production by ecosystem in the 4^th quarter 2020,  followed by Brackishwater Fishpond with 8.01 percent share and  Freshwater Fishpond with 3.26 percent share.

The dominant species in aquaculture subsector of Ilocos Region during  the period were Milkfish, Tilapia, Tiger prawn, Oyster, and Mussel.

Milkfish production of Ilocos Region in the 4th quarter 2020 registered at 66,844 metric tons, higher by 17.94 percent than its output in the same quarter in 2019 of 56,677 metric tons. Higher survival rate, bigger sizes of produce and more units harvested were the factors that contributed to the positive growth in output. Bulk of milkfish production came from the province of Pangasinan.