What can I switch for salmon??...

My BF is vegan and I don't eat fish however, I see dishes like cream cheese, salmon, avocado, seeds etc. And I wish I knew what I could place as an alternative to Salmon. I'd really appreciate some recipe ideas with this in mind. Some really TASTY recipe ideas If possible.

Side note: My bf also has just managed to get himself out of the pre-diabetic range so... I'm looking for something diabetic friendly. High protein, high healthy fats, high fiber.

Thanks 😊 😊😊💞💞💞🙏🏻🙏🏻🙏🏻