poach fillets in this:

1 onion chopped
4 finely minced garlic cloves
2tbs each:
oregano
basil
parsley
rosemary
2, 14oz cans whole or diced tomatoes
sweat aromatics in 1/4 cup olive oil until tender ,
add herbs and tomatoes simmer for about 2 hours.
Whiz with a hand blender to your taste, then
return to a bare simmer in a shallow skillet and add fish.
Cook untill flakey, serve with orzo, and a nice salad.
Thia will work with any fish, and is very, very , good.