The six species of North American salmon vary in price, color and taste, but all are healthy choices. The largest is the king or chinook, prized for its high fat content, rich omega-3s and buttery texture. Sockeye, an oilier fish with deep-red flesh, has a stronger flavor and stands up well to grilling. Coho is milder and often lighter in color. Pink and chum are smaller and most often used in canning or smoking. The most common fish you will find at the market is a farmed species known as Atlantic salmon, now endangered in the wild and not a recommended choice.