Seafood ── Fish
Isaki
chicken grunt — a summer fish at its best just before spawning
A white-fleshed fish that fattens ahead of the rainy season, earning the nickname 'tsuyu-isaki'. Served salt-grilled or raw — it moves inshore before spawning, so bay-facing ports see the biggest catch, and the best fat, at that time of year.
- White fish
What it's made of
Sometimes written with characters for 'chicken fish' because its dorsal spines resemble a rooster's comb, it's at its best in Japan's rainy season. Fish that have fattened ahead of spawning are called 'tsuyu-isaki' — white flesh with an unusually rich, rounded sweetness found only in that short window. It's also known for a high vitamin A content.
How it's made
Its mild white flesh suits everything from sashimi and sushi to salt-grilling, simmering, meunière, and frying. Young fish carry faint stripes that fade with age, and the standard is a simple salt grill that lets the seasonal fat speak for itself. Lightly searing the skin for extra fragrance is another favored touch.
Why it took this shape
It moves inshore ahead of spawning, so bay-facing grounds see heavier landings during the rainy season. Nagasaki Prefecture is said to account for roughly thirty percent of national output, with catches concentrated at that time of year across grounds from the Nishisonogi Peninsula to Goto, Iki, and Tsushima. Having several grounds washed by the same warm current is said to be what sustains that output.
Before you go
- How to shop at a supermarketHow to choose prepared foods, sashimi, and packaged sushi, when discount stickers tend to appear, region-only specialties, buying by weight, the checkout and bagging flow, and sampling etiquette at a local supermarket.
- Roadside stations, direct-sale stands, and marketsHow to enjoy buying food near where it's produced, visiting and shopping at morning markets and fish markets, what to expect at farm stands, and finding local food at roadside stations (michi-no-eki).
- Foods to look for in springA guide to foods often seen in Japan around spring — early bonito, bamboo shoots, sakura mochi, hanami bento, new-season tea, and butterbur sprouts — with rough pointers for finding them.
Dishes in the same style
- AinameA white-fleshed fish of rocky shores, served raw or simmered in old Edomae style. Sedentary by nature, it varies by region, and in some Tohoku ports its liver is eaten too — a fish long prized as a local catch.
- AmadaiA pink-skinned fish with a subtle sweetness, known in Kyoto as 'guji'. Fish caught in Wakasa Bay were lightly salted and carried inland along the old Saba Kaido route, a history that made lightly-salted Wakasa amadai prized in Kyoto cuisine.