I find it hard to care about the subject. Allocating mental effort seems unnecessary in the face of more pressing issues. I would support alternatives (if they exist) that  better preserve natural habitats, but I am curious as to why you seem to care about the ostensible suffering of individual fish? Would you feel an urge to cry or get really angry if I caught a fish right in front of you? If not so, could it be that this is an overextension of principles such as "do not cause harm"? Sticking to the guidelines when it does not seem to have noticeable benefit?

Keep in mind that I am new to this community, so if analyses like these are a pastime here I wouldn't know :)