halibut
catfish
tilapia
snapper
orange roughy
mahi mahi
grouper

Thanks, HalfPint. What about pollack? We can get sustainably harvested Alaska pollack quite easily -- and in most instances, it's at a lower cost than many of the items on your list. Thanks again. ;o)

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Thank you!

Pollack will work, it's in the cod family.

Thanks, HalfPint. Did not know that pollack is a cod. Very helpful. I love the Hotline! ;o)

In Great Britain, the most popular fish for fish and chips were traditionally cod, haddock, and plaice. Cod and haddock are close relatives (as is the pollock, as mentioned above), while the plaice is a flatfish, very different, but firm and white. Except for something really delicate, I think you can feel comfortable with a pretty broad range of species. I've even seen salmon, though I confess I think there a a heck of a lot better ways to eat salmon.

I've used grouper, haddock, pollack, even tilapia.