@darekpawlo Normally for many fish, yes. Parasites such as worms that can be in the fish, eaten which then wind up inhabiting people. However, specifically in https://mangadex.org/chapter/1101721/12 identifying the fish, it's declared being magical, it has no parasites and can be eaten raw.
@darekpawlo sushi/sashimi are an example of raw fish dish, and supposedly it is safer because the fish is caugh in colder water and frozen before you eat it, because it kills any potential worms or other parasites that might be in the fish.