Reddit reviews Do Fish Feel Pain?

> I’ve since learnt that they are actually quite intelligent. They can recognise each other, communicate, and grieve the loss of their companions. Some can even use objects as tools, and others make art in the sand to attract mates.

I'm only semi-familiar with animal cognition research, but I found this section very surprising. So, in case others thought it sounded like a stretch, here were some articles I found talking about some of the things he mentioned:

Tool use: https://www.scientificamerican.com/article/fishes-use-problem-solving-and-invent-tools/

Cognition/emotion: http://www.animalsandsociety.org/wp-content/uploads/2015/10/170-172-Do-Fish-Feel-Pain.pdf which refers to this book

"Making art in the sand": http://voices.nationalgeographic.com/2013/08/15/whats-this-mysterious-circle-on-the-seafloor/ (I wouldn't call mating displays "art" but I see what he was getting at)

(I couldn't find anything about "grieving for their companions")

At least for me, it still reads a little bit like hyperbole, but reading these was useful at challenging my preconceptions.

I haven't read any research on this but you might want to look at this book: https://www.amazon.com/Fish-Feel-Pain-Victoria-Braithwaite/dp/0199551200 I can't imagine how one could recreationally fish with the knowledge that fish are sentient. I'd say that animals being hunted suffer less than fish being caught recreationally, but that's just an intuitive guess.

Fish farming in general is much worse than animal farming in consequentialist terms: http://reducing-suffering.org/how-much-direct-suffering-is-caused-by-various-animal-foods/

However, the long run impact of wild caught fishing is varied and unclear: http://reducing-suffering.org/wild-caught-fishing-affects-wild-animal-suffering/