My boyfriend eats the fish with the head, is it normal?

So he was preapearing a big fish he bought from the supermarket, he was seasoning it, I never cooked fish before but i think u need to take the eyes and head off before cooking. I realized he didn't do it. So I asked, are you eating whole head and eyes. He was like "yes ofcourse, I do it like that whole my life" when I heard it, I was disgusted so bad. And it gave me big ick inside. I have obsession for cleaning. I am cleaning even the vegetables 3 times at least before I cook. I don't know maybe it's a normal thing but I felt so disgusted by the way he eats the head of the fish as well. He even said it's an honor in his culture when someone serves it. So maybe it's the cultural difference... maybe I'm just exaggerating...

My boyfriend eats the fish with the head, is it normal?
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