Flounder

As it turns out, flounder is a wide group of flatfish (called for their look) that includes fluke and sole. According to National Geographic, many species prefer to live in warm tropical seas. According to the International Union for Conservation of Nature's Red List, most face little to no overfishing and are considered a sustainable food option.

These odd-looking fish have soft, pleasantly sweet meat that demands some care in the cooking. Depending on your comfort level, buy it whole or in fillets and cook it in the oven, steamed, or sautéed. A mild breading or flour coating before cooking should give effective results in making it less brittle. Finish with a lemon butter sauce to highlight its delicate taste and lean texture.