Food · Fermented foods

Ma-iwashi (Japanese Sardine)

まいわし (Ma-iwashi)

Also known as: Ma-iwashi, Japanese sardine, Sardinops melanostictus, 真鰯

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At a glance

CategoryFood
Japanese labeling nameまいわし
Common Japanese notationsまいわし, 真鰯, マイワシ
OriginJapanese sardine (Sardinops melanostictus); pelagic schooling fish; principal landings Chiba (Choshi), Ibaraki, Hokkaido, Mie; cyclical population swings characterize this species
Typical functionsVolume retail sashimi and shioyaki, Maru-boshi (whole-dried) and mezashi (skewer-dried) retail, Iwashi-no-tsumire (sardine fish-balls) processed-food, Iwashi-bushi (dried sardine for dashi), Functional positioning (high DHA/EPA omega-3)
Regulatory status in JapanStandard food labeling. Fish allergen recommended.

Ma-iwashi (まいわし / 真鰯) — Japanese sardine (Sardinops melanostictus) — is a volume pelagic fish for sashimi/shioyaki, traditional dried products (maru-boshi, mezashi), processed-food applications (iwashi-no-tsumire, canned products), and functional DHA/EPA positioning.

Classification

Tags below link to other ingredients sharing the same attribute, so you can pivot from one ingredient to its peers.

Used in (typical product categories)

Finished-product categories that commonly include this ingredient in Japanese-market formulations.

  • Fresh and frozen ma-iwashi retail
  • Maru-boshi and mezashi traditional retail
  • Pre-prepared shime-iwashi (vinegared)
  • Iwashi canned products

What it is

Sardinops melanostictus Japanese sardine.

Typical uses in Japanese products

Volume sashimi/shioyaki.

Maru-boshi, mezashi traditional dried.

Iwashi-no-tsumire and canned products.

Iwashi-bushi for dashi.

DHA/EPA functional positioning.

For OEM: dried iwashi retail, canned products OEM, fish-ball production.

Regulatory classification in Japan

Standard food labeling. Fish allergen recommended.

Regulatory classification in other markets

EUMajor established global sardine trade.
USAEstablished US sardine market.
ChinaMajor global trade.
KoreaEstablished trade.

Example products

Example finished products will be added after verification.

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Related ingredients

References

  1. MEXT Standard Tables of Food Composition — まいわし 各形態

Last updated: 2026-04-28. Ingredient entries are reviewed at least annually against current regulatory listings.

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