Unless the fish meal's manufacturer presents a permit or states «human grade» fish or fish meal,
probably ethoxyquin (preservative banned from use in foods for human consumption) is present in the food even if it is not listed.
No corn, wheat, soy, grains, glutens, sugar, salt, BHA, BHT,
ethoxyquin, artificial flavors, artificial colors, preservatives, etc.,
probably represents the biggest trend.
However, the small amount of fish meal used as flavoring or as a source of Omega - 3 fatty acids in many cat foods is
probably safe, as long as it is not preserved with
ethoxyquin, a synthetic preservative.)