Kelp Greenling (Hexagrammos decagrammus) fish identification

Kelp Greenling

Hexagrammos decagrammus

Also known as

Rock Trout, Kelp Cod, Kelp Trout

About the Kelp Greenling

Kelp Greenlings are masters of disguise, their coloration varying wildly from olive green to reddish-brown, often mottled with spots and bars to blend seamlessly with their rocky and kelp-filled habitats. Males frequently display striking blue spots or washes on their heads and bodies, while females tend to be more uniformly brownish-yellow with small dark spots. They possess a distinctive elongated body, a large mouth, and several prominent lateral lines.

Source: FishBase & iNaturalist

Habitat

These opportunistic feeders thrive in rocky nearshore environments, particularly within lush kelp beds and around submerged structure where they can ambush prey. While they prefer the cover of kelp forests, they can also be found over sand bottoms adjacent to rocky reefs. Anglers should target areas with abundant rock and kelp, especially where currents bring food.

Distribution

Kelp Greenlings are prevalent along the northern Pacific coast of North America, ranging from the Aleutian Islands in Alaska down to northern Baja California, Mexico. They are especially common and sought after by anglers in the waters off British Columbia and Alaska, where their populations are robust.

Behaviour

Kelp Greenlings are primarily bottom-dwelling predators, utilizing their camouflage to lie in wait for unsuspecting prey. Their diet is diverse, consisting of crustaceans, polychaete worms, brittle stars, mollusks, and small fishes. They are not particularly migratory and tend to stay in their preferred rocky and kelp-filled home ranges. They are opportunistic feeders, often striking quickly at passing food items.

Edibility

★★★★

The white, flaky meat of the Kelp Greenling is quite tasty, offering a mild flavor that holds up well to various cooking methods. While not as prized as some larger rockfish or salmon, it makes for an excellent pan-fried or baked fillet, offering a satisfying meal for any angler.

Lure suggestion

For anglers, small jigs tipped with scent, plastic grub tails, or curly tail worms fished close to the bottom around kelp and rock structure are highly effective. Baits such as shrimp, squid, or pieces of fish also work exceptionally well when presented on a simple dropper loop or Carolina rig. A slow retrieve with occasional pauses often entices a strike.

Kelp Greenling Regulations

Select a state to see size limits, bag limits, and seasons for Kelp Greenling.

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Always confirm with the official state agency before keeping a fish.

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