Yellowtail Rockfish

The Yellowtail Rockfish (Sebastes flavidus) is a member of the family Scorpaenidae, one of over 100 rockfish species found in the North Pacific. It ranges from central California to the Gulf of Alaska, typically over rocky reefs, boulder fields, and open water near the continental shelf. Unlike many of its bottom-hugging relatives, this species spends much of its life schooling in the water column rather than resting on structure. It is one of the more abundant and widely distributed rockfishes along the U.S. West Coast and has long supported a substantial commercial and recreational fishery, prompting close fisheries-management monitoring of its populations.

Yellowtail Rockfish are recognized by their slim, moderately compressed bodies and yellow-tinged fins that give the species its name.

• Coloration: olive-brown to grayish-green back, fading to a lighter, sometimes yellowish belly
• Fins: pale yellow to olive dorsal, anal, and caudal fins, often with a translucent edge
• Head: relatively small, pointed snout with large eyes
• Body: elongated and less deep-bodied than many other rockfish
• Size: adults commonly reach 40-60 cm

They are easily confused with Widow Rockfish and Black Rockfish, but the yellow fin wash and slightly more slender profile help separate this species from its darker, deeper-bodied relatives.

Yellowtail Rockfish occupy cool, temperate marine waters of the North Pacific from central California north to the Gulf of Alaska. They are typically found from near the surface down to depths around 300 meters, most commonly between 30 and 150 meters over rocky reefs, pinnacles, and boulder-strewn bottoms near the continental shelf edge. Juveniles often shelter closer to kelp beds and nearshore rocky habitat before moving to deeper offshore reefs and open water as adults. This species tolerates a wide depth range and is frequently detected suspended well above the seafloor rather than tucked into crevices like many other rockfish.

This species is strongly schooling, often forming large midwater aggregations that can include mixed groups of other rockfish species such as widow and black rockfish. Yellowtail Rockfish feed primarily on small fish, krill, and other planktonic crustaceans, foraging actively in the water column rather than ambushing prey from cover. Like all rockfish, they are ovoviviparous, with internal fertilization and live birth of thousands of larvae released into open water, typically in winter and early spring. They are notably long-lived, with lifespans that can exceed 60 years, making populations slow to recover from overfishing.