Mix Salt With Flour And Rub Onto The Fish. Saute Fish In Oil Until Lightly Browned. Remove And Set Aside. Saute Onion In Same Pan For 5 Minutes. Add Tomatoes And Saute For 5 Minutes. Add Tomato Paste, Red Pepper And Broth. Bring To Simmer And Cook For 25 Minutes. Return Fish To The Sauce And Bring Back To A Serving Temperature. Serve Fish Topped With Sauce, Sprinkled With Mint