What fish have deliciously edible skins? I love salmon skins, especially when fried or oven roasted. I also always eat the skin when I have a filet. 


What other fish have deliciously yummy skins that can stand on their own like a salmon skin can? 
Are there fish whose skins are generally avoided? Examples?
The skin of all the small fish I have tried is delicious. I have never tried, e.g. tuna skin, and I imagine that it is too tough and I also wouldn't eat shark skin.  Back when I used to eat fish, I always ate the skin, and found it to be the best part. Beware, though, as while the skin concentrates the deliciousness, it also concentrates the mercury and other contaminants, so you may consider limiting your intake.