3 chili lime fish tostadas Recipes

diced peeled pineapple, diced peeled jicama, diced red onion, chopped fresh cilantro, fresh lime juice, serrano chiles, seeded, chopped, olive oil, chili powder, zucchini , each cut lengthwise into 5 slices (about 10 oz), halibut or orange roughy fillets, corn tortillas

low-fat sour cream, fresh lime juice, divided, fresh corn kernels or frozen corn kernels, thawed, tomatoes, seeded and diced, sliced green onions (about 3), olive oil, divided, chopped fresh cilantro, minced seeded jalapeno pepper, salt, divided, freshly ground black pepper, divided, sliced onion, red bell pepper, seeded and cut into thin strips, tostada shells, grouper or other firm white fish fillets, chili powder, ground cumin, shredded romaine or leaf lettuce