I’m first-generation and my family is Nigerian, and while I personally don’t eat the heads, we do entire dried fish quite a bit. Locally, we refer to it as “oporoko,” and it’s primarily imported from Norway, rather than Iceland, as another commenter has mentioned. It’s also very widely available in African and Nigerian food stores in the United States.

Similar to the what’s said in the link another commenter posted, I would say it is one of my favorite foods.