We eat an extraordinary amount of the fish and seafood in the world from the ocean: “The global per capita consumption footprint in 2011 is estimated at 27 kg. [That figure also includes] the indirect use of capture fisheries production by the fishmeal sector.” “the conversion of wild-capture fish that would not be used for human consumption into fishmeal and subsequent use as aquafeed, results in an overall increase in human consumption of fish”.

Figures do seem to show that most ocean fishing is for human consumption, but 16Mt of forage fishing (non-edible) is still greater than 10% of our total ocean fishing.

About 75% of fish meal is used for farm fisheries (aquaculture), the other 25% for animal farming on land. Fish meal is ~3/4 made up of non-edible fish (forage fisheries) and at most 1/4 trimmings (in 2017).

Finding good information needs persistance - but the above quotes use some of the keywords.