The Pacific Sierra Mackerel has a slender, elongated body with a pointed head and a large mouth. Its body is typically a dark blue or greenish color on the back, fading to a silvery-white color on the belly, and it has a series of dark spots on its sides. It can grow up to 3 feet (90 cm) in length and weigh up to 15 pounds (7 kg).
Pacific Sierra Mackerel is a pelagic fish that inhabits nearshore and offshore waters, often in schools. It feeds on a variety of small fish and crustaceans, and is a fast-swimming predator known for its aggressive strikes on fishing lures and bait.