Saltwater · Winter peak November-March when the flesh is best; year-round on reefs

Asian Sheepshead Wrasse

Semicossyphus reticulatus

The famous hump-headed wrasse of the Jeju and south-coast reefs — 혹돔. Old males carry the unmissable forehead hump and chin bulge — one of the most distinctive profiles in these waters. It cracks urchins and crabs on the reef and is a prized winter opponent from boats and open rocks. The species changes sex as it grows; the largest, humped fish are old males.

Seasons · Peak

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Asian Sheepshead Wrasse — Photo: Totti, CC BY-SA 4.0 — Wikimedia Commons

Identifying features

Huge, pronounced forehead hump on the old male — unmissable
Heavy chin bulge on males; females slimmer in profile
Thick lips and stout teeth for crushing shells
Grey to dark colour, old males nearly black
One of the largest wrasses of the region — to about 35 in (90 cm)

Habits

Sexual dimorphism is extreme: old males grow the famous forehead hump and chin bulge — the species changes sex with age
Cracks sea urchins, crabs and shellfish with powerful jaws
Solitary and territorial around reef caves
Most coveted by anglers in winter — the flesh is at its best
A prized opponent from boats and rocks

Distribution

Regional coverage expanding

Where to find them

Reefs off Jeju
Deep rocks at Yeosu
Busan open-coast rocks in winter

Where they live

Deep rocky reefs around Jeju and the south coast in 60-200 ftOpen-coast rocks with drop-offs into deep waterKelp forests and rocky channels

How to catch them

Boat fishing over deep reefs Boat

Rig: Strong bottom rig with whole crabs fished from a boat over 60-180 ft reef at Jeju

Bait/lure: Whole crabs or sea urchins

Key tip: Let the fish take the bait and turn, then strike hard — it dives straight for its cave.

Deep rock fishing from shore (winter) Rock fishing

Rig: Heavy bottom rig cast from open-coast rocks into deep water, fished in winter

Bait/lure: Shellfish meat

Key tip: A strong leader is essential — teeth and rock shred weak mono in seconds.

Best baits & lures

Whole crabsSea urchinsShellfish meat

Techniques for Asian Sheepshead Wrasse →

Baseline setup

Rod: Heavy 7-8 ft boat or rock rod
Line: 25-40 lb monofilament or braid
Terminal: Hooks size 3/0 on strong leader, 30-60 g grip sinkers

Recommended gear for this species

Rod · Best value

7'6" medium-heavy jigging rod

≈ US$110-170

Works 2-6 oz jigs over rock and reef and still has the backbone to lift a halibut off the bottom.

Line · Budget

50 lb braid with 40 lb leader (200 yd)

≈ US$25-40

Thin braid cuts the current so jigs stay vertical; the leader shrugs off rock and teeth.

Terminal · Budget

Leadhead jigs, swimbaits and two-hook bottom rigs

≈ US$25-40

A leadhead with a swimbait tail is the universal bottom-fish catcher, from rockfish to cod to flounder.

Picks are never paid placements. Prices are guides; price links are coming soon and none is an affiliate link yet.

Typical size

Common 16-24 in (40-60 cm); old males to about 35 in (90 cm)

On the table

Prized in Korea and Japan, especially in winter; the head meat is a delicacy.

Similar species

ParrotfishesParrotfishes have beak-fused teeth and graze algae; Asian sheepshead wrasse is a solitary shell-crushing reef hunter with a forehead hump

Regulations vary by area and can change in-season — always check the official rules for your area before you fish. Regulations guide →

Plan a trip for Asian Sheepshead Wrasse

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⚠ Heads-up: Asian Sheepshead Wrasse doesn't occur around Vancouver, BC (or is very rare there), so it's not a sensible local target. Your plan stays in Vancouver, BC and is built around the fish that actually live there.