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Q&A Why do some fisheries have a lower size limit and others have an upper size limit for keeping fish?

My home river has a minimum size limit of 50 cm for keeping atlantic salmon, while I have seen online that some other places have a maximum size limit above which fish cannot be retained. Why is th...

2 answers  ·  posted 9y ago by Kenji‭  ·  last activity 9y ago by System‭

#2: Attribution notice added by user avatar System‭ · 2020-04-17T20:39:15Z (over 4 years ago)
Source: https://outdoors.stackexchange.com/q/9242
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/
#1: Initial revision by user avatar Kenji‭ · 2020-04-17T20:39:15Z (over 4 years ago)
<p>My <a href="https://en.wikipedia.org/wiki/Ume_River">home river</a> has a minimum size limit of 50 cm for keeping atlantic salmon, while I have seen <a href="http://www.uky.edu/~agrdanny/flyfish/ethics.htm">online</a> that some other places have a maximum size limit above which fish cannot be retained. Why is there such difference between fisheries? Which way is more efficient in terms of conservation? What are the arguments for one or another?</p>