Freshwater · May-September; quiet in winter
Chinese Bitterling Relative
Aphyocypris chinensis
A tiny, unassuming fish of vegetated lowland streams — 왜몰개. It tolerates slower, warmer water than most Korean small species and keeps to ditches and small canals. A genuine test of the lightest possible tackle, if targeted at all.
Seasons · Peak
Identifying features
- Tiny, laterally compressed body with a small terminal mouth
- Dull silvery body with a light brown tint
- A vague dark longitudinal stripe
- Mildly rounded dorsal and anal fins
- Rusty tint on pectoral fins in summer males
Habits
- Quiet schooling fish of vegetated edges
- A small carp-family member found across China, Korea and Japan
- Feeds on algae and microorganisms
- A native that predates introduced species in local ditches
- Hard to notice — most small cyprinids look similar
Distribution
Regional coverage expanding
Where to find them
- Vegetated canals of the Geum River basin
- Icheon paddy ditches, Gyeonggi-do
- Quiet tributaries of the Han River
Where they live
How to catch them
Micro fishing in vegetated canals River
Rig: Tiny hook with a maggot or algae, drifted weightless through slow vegetated canals
Bait/lure: Single maggot or algae thread
Key tip: Fish in sunlight — they sight-feed; strike on touch, as they drop small baits fast.
Dapping with micro flies River
Rig: Tiny dry fly held stationary at the still edges of canals and ditches
Bait/lure: Size 24-26 dry fly
Key tip: Ultra-fine tippets; best in warm, still summer weather.
Best baits & lures
Baseline setup
- Rod: Ultralight 5-6 ft stream rod
- Line: 1-2 lb monofilament
- Terminal: Tiny hooks size 24-26, micro split shot
Recommended gear for this species
Rod · Best value
8' medium-heavy catfish rod
≈ US$80-130
Long enough to lob heavy bait rigs, strong enough to move a flathead off the bottom.
Reel · Budget
Baitcasting or 4000-6000 spinning reel
≈ US$60-100
Line capacity and drag for long runs — catfish and carp both make them.
Terminal · Budget
Circle hooks, sliding sinkers and cut-bait rigs
≈ US$15-25
A slip-sinker rig with a circle hook is the proven bottom setup for cats and carp alike.
Picks come from our rule library — never paid placements. Prices are guides; affiliate links may earn us a commission.
Typical size
Common 1-2 in (3-5 cm)
On the table
Tiny and not eaten; as a small native, careful identification matters.
Similar species
Regulations vary by area and can change in-season — always check the official rules for your area before you fish. Regulations guide →
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