In ancient times, rivers and lakes did not suffer the eutrophication of today, nor was there competition from introduced fish species such as tilapia.
古代河川、湖泊並未優氧化，又無外來魚種吳郭魚搶佔地盤，湖寬如洋面，江廣不見對岸，打撈上岸的水物，正如今天台灣的高山溪魚、溪蝦，在老饕眼裡，鮮美自是不輸海產。