That's the land/water rights owners rules. You have to fill out a card of every fish you kill, they than take that number, end it to the biologists of the German state your in, and order fish to be restocked
You would not agree with los Germanos, were you not possessed of a prefrontal cortex.
As fish are lacking this critical piece of anatomy, ideas of cruelty as applied to more evolutionarily advanced chordates are irrelevant.
Fish are incapable of a subjective interpretation of reality in much the same way a person who has a damaged or missing prefrontal cortex is thus impeded. The autonomic functions are intact, and reactions to external stimulus may be observed, but there are no "good feelings" or "bad feelings." Things don't hurt if you don't experience them as negative. Lacking the subjective experience of good or bad sensation, fish are incapable of sentience.
I still dispatch them with all due haste when I intend to consume them; this is because I am sentient and anthropomorphize them despite my understanding of their anatomy.
To put it in simple terms, fish do not experience pain in the way we do, or the way a chimp or a dog does. They are biologically incapable.
She was full of eggs. I asked the baron today why we are only allowed to fish one section until 1 march. It's about 1/4 of a mile he has open, he calls it trophy Kane. He will close that section from March until September, he said today he needs the number thinned out for biological reasons, his words