Sattie, I love fish tacos. Tried one years ago at an outdoor beach restaurant/stand (in Malibu, Zuma Beach or beyond - near or on PCH). It was a deep fried white fish, probably similar to fish sticks. If you don't have a deep fryer, those Mrs. Paul's fishsticks were not altogether bad. It's a blast from the past when I had them with mac 'n cheese, lol; but in a pinch, you could use the fish sticks, add chopped tomatoes, slaw, tartar sauce or relish, & roll it up in a soft taco.
Re the fish sticks - an interesting recipe I saw was pasta shells stuffed with fish sticks (tomato sauce and mozzarella?) on the Gorton's site.