I hate fish, but I've been revamping my diet for the last month and I'm working my way through them. I watched that programme too, it was a real eye opener. All of that junk!
I tend to eat a lot of veg and not a lot of processed junk anyway but it's definitely given me more of a nudge. I'm interested in the Scandi diet, I think that's doable.
With fish, the fresher it is, the less 'fishy' it tastes. Avoid anything that looks slimy/smells very fishy or a fish with cloudy eyes as they have been out of the sea for too long.
As suggested, start with the delicate ones which taste nothing like fish, I'd go for Mahi mahi, then crayfish (nice with mayo and a little dill).
tastes just like chicken! seriously. It tastes nothing like fish.
Crayfish also tastes nothing like fish (or prawns). Scallops are gross.
Dab is lovely and has a very mild flavour but the bones are an absolute PITA.
White crab is lovely. I cook it with diced pancetta and mix with pasta and sundried tomato pesto.
Rainbow trout is fairly nice (it's slightly better than mackerel). Cook in a closed paper bag with some butter and some slightly crushed pepper corns.
Tuna steaks taste different to canned tuna. They can contain trace bits of mercury though so it's best not to eat it too often.
Smoked salmon, cream cheese and gravalax is lovely.
I haven't tried swordfish yet, lobster tastes OK but it's not worth the price.