Canned oily fish, even though it has been cooked, seems to be a wonderful treat for them, and I make sure to give them the juices too. I discovered that it would cure and prevent dry eyes in cats, and I enjoy giving them things which they really like!
Go for it. We like the top class Weruva food, adding some olive or coconut oil over it sometimes. It’s just so convenient and I have 4 kids.