Just as ivorypuma already mentioned the issue with fishing is overfishing.
That is why most of the fishing laws exist in order to guarantee that there will still be fish to be fished in the future.
And now this "genius" author "solves" the issue of breaking fishing laws in his manga by having them fish even MORE fish out of the waters already at risk of ending up fishless if fishing is not restricted?
How ignorant can a Japanese be about such important matters of his own nation?
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Significance of the Licence System
The purpose of controlling fisheries is two-fold. One purpose refers to resource management, to ensure the “maximum sustained yield”, by preventing either over-exploitation or under-exploitation of resources.
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