This healthy fish recipe is made with triggerfish, a tasty, versatile and plentiful species. We call for easy-to-find frozen baby lima beans for the succotash (called butter beans in the south), but if you can find fresh summer field peas, try them in this dish. Look for lady peas, zipper cream, white acre, crowder or pink-eyed varieties at your farmers' market. Cook 2 cups of shelled peas in boiling water with a pinch of salt until tender, 20 to 45 minutes.