Fish Tacos without fruit

Olive oil cooking spray 1 pound halibut fillets or steaks (or other firm white fish such as cod or catfish) 1/2 teaspoon ground cumin 1/2 teaspoon salt[...]

1 1/2 lb flounder fillets (preferably large) 2 tablespoons olive oil 1 teaspoon salt 1/2 teaspoon black pepper 1 cup mayonnaise 1/2 cup plain yogurt 1/2[...]