I don't know for sure. He seems to understand English.
But, the no name stuff didn't look as nice. It had a lot more coagulated white stuff (protein?) on the surface than the Clover Leaf salmon does.
Interesting link, though I knew most of that stuff. But, it doesn't really apply in this case. The tinned salmon is the stuff meant for human consumption.
I'm not really concerned about what is in his pet food at this stage in his life. I just want him to like it enough to eat it. I did try making raw food for him (from a recipe from a vet), but he wouldn't eat it. Next cat is getting homemade food, as well as learning to use the toilet, ride in the car, and to tolerate a "sponge bath" and having its teeth brushed. That is, unless I adopt an cat that is too old to learn that stuff.
I doubt he didn't want it because of appearance. He sniffs his food. I just mentioned it because I assume that a bunch of congealed protein means it was overcooked and that would affect flavour and maybe aroma.That doesn't necessarily mean that it's bad for a cat. Cat's have a different idea of what 'looks nice' than humans. Or is edible, hence why they might eat their barf.
I've never seen a cat eat its barf. I have seen dogs do that.