Overall, he thinks its unclear but urges erring on the side of caution:
“This piece surveys reasons why the harvesting of wild fish might reduce as well as increase the suffering of oceanic creatures. The net impact is extremely unclear. (...) That said, I would probably err on the side of not eating fish, especially because wild-catch fishing may increase the amount of fish farming in the future.”
Not sure why your question was downvoted.
Brian Tomasik has written a few articles on this, including https://reducing-suffering.org/wild-caught-fishing-affects-wild-animal-suffering/
Overall, he thinks its unclear but urges erring on the side of caution:
“This piece surveys reasons why the harvesting of wild fish might reduce as well as increase the suffering of oceanic creatures. The net impact is extremely unclear. (...) That said, I would probably err on the side of not eating fish, especially because wild-catch fishing may increase the amount of fish farming in the future.”