2026.09.24

Japanese Flounder (Hirame): A Guide for Anglers Visiting Japan

minagiman

If you fish a beach in Japan, sooner or later you will be fishing for hirame. An entire section of every Japanese tackle shop exists to catch this one fish from the sand, and a whole style of fishing – surf lure fishing – grew up around it. Most of my own fishing life on the Enshunada coast has been spent chasing it.

This is the fish explained for someone who did not grow up with it: what it is, how to recognise it, when and where it feeds, and what to expect when you hook one.

Contents

What it is
Hirame or karei? The one-line test
When
Where on the beach
How to catch one on a lure
- Strike immediately on a lure – forget “hirame forty”
What it feels like when you hook one
Handling
Eating
Tackle, in one paragraph
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What it is

Item	Detail
Japanese name	Hirame (ヒラメ)
English names	Olive flounder, Japanese flounder, bastard halibut
Scientific name	Paralichthys olivaceus
Typical beach size	40-60 cm
Small	Called soge
Large	Called zabuton (“floor cushion”)
Maximum	Fish over 80 cm are on record
Diet	Fish – sardine, anchovy and other small baitfish

It is a predator. It lies flat on the sand, buried or half-buried, and strikes upward at baitfish passing over it. Almost everything about how you fish for it follows from that one fact.

Hirame or karei? The one-line test

Japan has a second group of flatfish called karei – the right-eye flounders. The Japanese saying is hidari hirame ni migi karei: “hirame on the left, karei on the right”.

Lay the fish dark side up with its belly towards you. If the head points left, it is a hirame. If it points right, it is a karei.

The mouth is the confirmation. A hirame has a big mouth full of sharp teeth – it is built to eat fish. A karei has a small mouth and eats worms and shellfish, which is why karei are caught on bait and hirame on lures.

When

Season	What to expect
Autumn to early winter	The main season on most Pacific beaches. Bait moves inshore and hirame follow it
Spring	A second window, often with good-sized fish
Summer	Possible, especially at dawn and in stained water, but less consistent
Mid-winter	Hardest – but winter hirame (kan-birame) are considered the best eating

Seasons shift by region and year. The simplest indicator is the bait: when small baitfish are pushed up against the beach, hirame are usually close.

Where on the beach

A beach looks uniform. It is not. Hirame sit where the bottom changes and where current concentrates bait:

The edges of rip currents – not the core of the rip, but the slower water beside it where bait gets pushed and spun.
Drop-offs and the edge of sand bars – where shallow water suddenly deepens.
Gutters – deeper channels running parallel to the beach.
River mouths – fresh water, bait and current in one place.

Reading those features is a skill of its own; I have a separate guide on how to read a surf beach.

How to catch one on a lure

The basic method is simple: cast, let the lure hit the bottom, then retrieve it steadily just above the sand. The fish is looking up. A lure dragged through the sand is below its line of sight and looks wrong; a lure that holds just above the bottom is exactly where it wants to eat.

Soft plastic on a jig head – the default, and the easiest to fish well. The DUO Beach Walker Haul is the lure most Japanese anglers learn on.
Heavy sinking pencils and metal lures – for distance, wind and current. See five lures for Japanese flounder.
Shallow minnows – for calm, shallow beaches and dawn. The Shallow Assassin 99F has a strong record.

Strike immediately on a lure – forget “hirame forty”

There is an old saying, hirame yonjū – “hirame, forty”. Bait anglers using live sardines count to forty before setting the hook, because a hirame grabs the bait crosswise and takes time to turn it and swallow it. That is for live bait. On a lure, set the hook the moment you feel it.

What it feels like when you hook one

A hirame bite on a lure is often a dull weight rather than a sharp knock – as if you have hooked a bag of sand. Then the head shakes start.

Head shakes – heavy, side to side. Keep steady pressure. Do not pump the rod.
Planting – a big hirame will lie flat and use its body against the current. It feels like being snagged. Hold pressure and it will lift.
The last run at your feet – fish are often lost in the shore break. Do not drag it up the sand against a retreating wave. Wait for the next wave to push it up, then walk back with it.

Handling

Keep your fingers out of the mouth. The teeth are sharp and angled backwards. Use fish grips or pliers.
Hold the body, not the gill cover, and support its weight – a heavy flatfish held by the jaw alone can be injured.
If releasing, do it quickly and in the water. Some prefectures set minimum sizes – check local rules before keeping one.

Eating

Hirame is one of the most prized white fish in Japan. Sashimi is the classic; the thin strip of muscle along the base of the fins, engawa, is the part sushi lovers look for. Bleed it quickly and keep it cold – the difference in quality is obvious.

Tackle, in one paragraph

A surf rod of about 10 ft in the ML to M range, a 4000-size spinning reel, PE 1.0-1.2 braid with a 16-20 lb fluorocarbon leader, and lures of 20-40 g. If the rod is the open question, start with my surf rods by price range and Nessa XR comparison. For line, see the PE line and leader guide.