Freshwater Β· Spring spawning run, mainly March-May; Gangwon-do east coast
Big-scaled Redfin
Tribolodon hakonensis
An anadromous north-west Pacific carp relative that runs from the sea into east-coast rivers each spring; Gangwon-do villages mark the short run with rods and with the table. Runs last only a few weeks, with schools packing into estuary mouths and harbour entrances where small spinners and light float rigs score. Japan knows the same fish as ugui (an A2 listing there) β this page is the main account for both countries.
Seasons Β· Peak
Identifying features
- Large, shiny scales with dark edges β the namesake feature
- Deeply forked tail and a streamlined carp-like body
- Spawning males show reddish fins and rough tubercles
- Grows to 20 in (50 cm) β the biggest Tribolodon in Korea and Japan
- Small terminal mouth, no barbels
Habits
- Migrates from the sea into rivers to spawn in spring
- Forms dense schools as it approaches the coast
- Feeds on small crustaceans, insect larvae and juvenile fish
- The run is brief β a few weeks per river in most years
- Drops back to coastal water after spawning
Distribution
Regional coverage expanding
Where to find them
- Yangyang Namdaecheon river mouth, Gangwon-do
- Gangneung coastal streams in spring
- Donghae coast during the run
Where they live
How to catch them
Spinner casting at the river mouth River
Rig: 3-5 g spinner or spoon cast from jetties and banks into the estuary current and retrieved steadily with pauses
Bait/lure: Small spinner or spoon (lure)
Key tip: Fish when the school is visibly rolling; strikes come at the edges of the school, not its centre.
Light float fishing in harbours and surf Shore
Rig: Light float rig with a small hook baited with shrimp or worm, cast into quiet harbour entrances and along the surf line
Bait/lure: Small shrimp, sandworm or dough paste
Key tip: Fish the tide change as schools push into the entrance; set the float just off the bottom.
Best baits & lures
Baseline setup
- Rod: Medium 8-9 ft spinning or surf rod
- Line: 6-10 lb braid or monofilament
- Terminal: 3-5 g spinners, small hooks size 6-8, light float rigs
Recommended gear for this species
Rod Β· Best value
9' 5-weight fly rod outfit
β US$180-260
Covers chironomid lakes and small rivers with one setup.
Flies Β· Budget
Chironomid assortment (30 patterns)
β US$25-40
Chironomids are 60% of a lake rainbow's diet in spring.
Picks come from our rule library β never paid placements. Prices are guides; affiliate links may earn us a commission.
Typical size
Common 12-16 in (30-40 cm); large fish to 20 in (50 cm)
On the table
A spring tradition in Gangwon-do (sliced as hwang-eo-hoe); bony, commonly eaten as sashimi or in stews.
Similar species
Regulations vary by area and can change in-season β always check the official rules for your area before you fish. Regulations guide β
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