2 tablespoons olive oil
2 tablespoons freshly squeezed lime juice
1/4 teaspoon salt
Freshly ground black pepper
1 pound white flaky fish fillet, like tilapia or halibut
1/2 cup plain nonfat yogurt
2 tablespoons mayonnaise
2 teaspoons chipotle pepper, in adobo sauce
8 (6-inch) corn tortillas
1 1/2 cups shredded green cabbage or lettuce
1/2 cup corn kernels (thawed if frozen)
1/4 cup fresh cilantro leaves
Lime wedges