Freshwater · Spring and fall peaks; year-round in mild weather, best when streams run clear
Taiwan Shoveljaw Carp
Acrossocheilus formosanus
The Taiwan shoveljaw — the kuhua — is the icon of Taiwan's mountain streams. Its flattened, shovel-like lower jaw is held flat against rock faces to scrape off algae, and watching a shoal flash silver as it grazes a boulder is a classic Taiwan stream sight. It belongs to the same barbel genus as the banded barbel, the Wenzhou barbel and the Taiwan torrent carp.
Seasons · Peak
Identifying features
- Flattened, shovel-like lower jaw that lies flat against rock when feeding
- Plain silvery-olive flanks without the bold bars of its barbel cousins
- Two pairs of barbels; mouth underslung and wide for scraping
- Breeding males develop rough tubercles on the snout and brighter fins
- Streamlined body with a deeply forked tail for holding in current
Habits
- A specialist algae-scraper: grazes rock faces in fast, clear water
- Shoals turn and flash in unison as they work a boulder face
- Feeds by day; shy of shadows and sudden movement on the bank
- Holds behind rocks in runs, moving onto open faces to feed
- Males defend small territories around spawning gravel in spring
Distribution
Regional coverage expanding
Where to find them
- Sunlit boulder faces in mid-stream runs
- Pool tails below small falls and riffles
- Rock walls along the edges of clear stream pools
Where they live
How to catch them
Stream drift fishing with algae and dough River
Rig: Fine float rig drifted along rock faces, tiny hook baited with green algae or a pinhead of dough
Bait/lure: Stream algae, tiny dough pellets
Key tip: Present the bait right against the rock where the shoal is grazing, and keep your shadow off the water.
Fly and micro tackle over rock faces River
Rig: Ultralight or fly tackle with a tiny nymph or algae-fly worked slowly across sunlit boulder faces
Bait/lure: Small nymphs, algae-imitation flies, micro soft baits
Key tip: Fish at midday when shoals move onto the faces to graze in the sun; strikes are visual — watch the fish turn.
Best baits & lures
Baseline setup
- Rod: Ultralight stream rod or light fly rod
- Line: 2-5 lb mono or light fly tippet
- Terminal: Tiny hooks size 16-20, fine floats, small nymphs
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 4-7 in; large fish to about 10 in
On the table
Good — a prized Taiwan stream food fish, though stocks in popular streams benefit from catch and release.
Similar species
Taiwan Torrent CarpTaiwan torrent carp is a bigger, deeper fish with faint flank markings and a normal rounded scraping mouth; the shoveljaw is smaller and slimmer with a distinctly flat, shovel-shaped lower jaw and plain flanks
Banded BarbelBanded barbel wears bold dark vertical bars and grows much larger in mainland hill streams; the Taiwan shoveljaw is unbarred, smaller and endemic to Taiwan's mountain streamsRegulations 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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