If fishing was only allowed when prey was mature, and nets with larger holes were used to allow young fish to escape, then, even with smaller hauls, the price would rise with a smaller supply of higher quality, more mature fish, so that the fishermen's livelihood would not be threatened.
事實上不論是烏魚、仔魚或是小捲，如果在牠們成熟飽滿的季節才捕撈，並且加大網目，即使捕撈的數量會減少，然而因為成熟度夠，價錢好，並不會減少漁民的收入。