It depens on the size of the fish. If the fish are small they will have small amounts of mercury in their bodies, so I'll prefer eating the raw fish. However, if the fish are big that means they will have more mercury, that can be dangerous.
Chickens in intensive farming are usually kept in very small spaces, and the same applies to transportation, this makes them susceptible to infections and contagions.
So, if the fish are small I will eat the raw fish. But if the fish are big I will eat the chickens, because it takes like 18 years to get rid of about half the mercury, but things like salmonella can be cured in a few weeks with the necessary treatments.
I say this considering that I can make chickens end up like raw chicken meat because I wouldn't know how to swallow the feathers