I think that the party approaching the problem, however they had good intentions, i believe they shouldn't have been so vulgar about it, and i believe they did everything right other than that, but i'd probably be pissed too if someone killed a fish just to kill it. The reason why that man was in the wrong was it was illegal, and i don't know if this is true or not, but they probably where illegal to fish for due to conservation of the species reasons, and on top of that, even if it wasn't illegal, they just killed an animal and didn't take it to use or sell, just clubbed it on the head and left it, and not only that, he essentially caused a minute disruption in the ecosystem, irregardless if it was a small one; and it could mess up the ecosystem some how in a small way that could eventually expand to become a big problem ( the ecosystem disruption thing is a hypothesis, so no, it's not proven fact, just a concern, as well as my opinion.)
