Baitfish · Fish

Ugui / Japanese Dace

Pseudaspius hakonensis
Ugui / Japanese Dace — Adult
Size
100–200mm
Always there

No hatch and no season — this is in the water every month of the year, so it's always a fair bet when nothing is showing on top.

How fish feed on it

Once a trout is big enough to take fish, it stops being an insect-eater in the way it was and becomes something closer to an ambush predator. Fry and small fish get pinned against margins, weed beds and shelves, and the takes are hard and unmistakable. Autumn is the classic window, when this year's fry are shoaling and the biggest fish in the water finally show themselves.

Flies that imitate this
Clouser Minnow
Clouser Minnow
Woolly Bugger
Woolly Bugger
Black Zonker
Black Zonker
Muddler Minnow
Muddler Minnow
Ecology
Rivers & stillwater
Where you'll find this
  • East AsiaPresent
Present throughout
About the genus Pseudaspius

The big-scaled redfin ( Pseudaspius hakonensis ), also known as the Japanese dace and ugui (鯎 or 鵜喰), is a medium-sized Asian fish. First described by Albert Günther in 1877 as Leuciscus hakonensis , it was the type specimen of the genus Tribolodon , having been described again as Tribolodon punctatum by Henri Émile Sauvage when he established that genus in 1883. It is the most widely distributed of the Pseudaspius species, found over much of the Sea of Japan....