Each hectare of land produces about ten metric tons of eels a year. Taiwan's annual production of eels is about 20,000 metric tons, worth more than US $ 100 million.
每公頃鰻池每年可產鰻魚十公噸左右，全省鰻魚年產量在二萬公噸上下，總值達美金一億元以上。