I bought a can of these the other week and tried some today on Seniorboy. He ate some of them which - considering he was just out of bed and doesn't like fish much - is almost an expression of enthusiasm.
More to the point, they're actually very tasty and would, I think, eg mash down fine on some toast for a human supper. (Thinking about half cans here.)
Just saying in case anyone else has a fusspot cat to feed. 