Tsurizukan

Fish

Temperate Scad ムロアジ

Decapterus muroadsi ・ Carangidae (Jacks)

Temperate Scad (Decapterus muroadsi)
Photo: Alberto Alcalá / CC BY 4.0 — source

Catch season

Months for Temperate Scad are a broad Japan-wide guide and shift with region, temperature and conditions; prefer local reports and rules.

About

A warm-water scad, slimmer than the Japanese Horse Mackerel. On the Izu Islands it is the main ingredient for kusaya, a pungent fermented dried fish.

Basics

Scientific name
Decapterus muroadsi
Family
Carangidae (Jacks)
Japanese name
ムロアジ
Kana
むろあじ
Waters
Southern Pacific coast, East China Sea & western Kyushu, Okinawa & Nansei Islands
Size
44 cm (max 80 cm)
Time of day
Dawn, Dusk
Depth (tana)
Surface to mid-water, setting float depth to the travelling school.

How to catch it

A sabiki and cage-rig target from breakwaters and rocky shores in the Izu Islands, fished with minced-shrimp chum mainly from May to October. Use a leader of 1-go or heavier, as lighter line gets cut off.

Bait-cage casting from a Breakwater / Pier

Temperate Scad: Use current lines and birds to anticipate the school. The rig is heavy, so check behind before every cast.

Waters: Southern Pacific coast, East China Sea & western Kyushu, Okinawa & Nansei Islands

Kit for this fish

Bait-cage casting kit ・ Kit total ¥26,000–68,000

The heavy rig demands head and eye protection plus generous casting clearance.

Product links may be affiliate links. Prices move, so treat the ranges as a guide.

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Handle with care

This fish is dangerous to handle bare-handed.

Histamine Moderate ・ Where: 鮮度低下した筋肉

Warm storage raises histamine-poisoning risk. Chill the catch immediately with ample ice; cooking is not a remedy.

Killing and carrying your catch — the taste is decided at the pier, not the kitchen

Eating

Eating quality 3/5 ★★★☆☆

If retained for food, chill immediately and follow established local handling with thorough cooking.

Best eating: September–December

Rules

Before fishing, check prefectural fishery rules, regional size and season limits, protected areas, and harbour or charter retention rules.

Closed seasons and size limits — how to find the numbers, which differ by prefecture

This article organises general information and is not legal advice. Rules differ by municipality and by fishery cooperative, and they change. Always check the current rules for where you are going.

Other fish taken the same way

Other fish from the same kind of place

Seasons, sizes and eating quality are general guides. Rules change, so check the latest prefectural, fishery-cooperative and site rules before fishing. This app provides general information, not legal advice.