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Diadromous Endangered 🍽️ Edible 🌡️ Subtropical

Japanese grenadier anchovy

Coilia nasus Temminck & Schlegel, 1846
Max Length
41 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
0–50 m
Climate
Subtropical
Resilience
Medium
Vulnerability
25.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Occurs in coastal waters, estuaries and reaching up to middle parts of rivers, apparently able to tolerate freshwater . Lives in not really clean water but not really turbid water either . Goes to the deep water areas of rivers at night . Planktivore . Spawns around three times in a lifetime and spawning occurs in between reeds . In Ariake Sound, Japan it breeds from May to August, the fishes running about 15 km up the Chikugo River and spawning in freshwater, the spherical eggs floating down and hatching near the river mouth. Its relatively large size makes it a more esteemed food fish than most Coilia. Used in Chinese medicine .

Scientific Name
Coilia nasus
Authority
Temminck & Schlegel, 1846
Habitat
Diadromous
Climate
Subtropical
Body Shape
Elongated
IUCN Status
EN
Max Length
41 cm
Depth Range
0–50 m
Trophic Level
3
Resilience
Medium
Vulnerability
25.00/100
Migration
Anadromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 80. Body tapering, belly rounded before pelvic fins, with 16 to 26 + 25 to 36 = 43 to 61 keeled scutes from isthmus to anus. Maxilla long, reaching to or almost to base of first pectoral fin ray. Pectoral fin with 6 filaments; branched fin rays longer than those of pelvic fin.: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Japanese grenadier anchovy is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Spawn in school .

🌍 Habitat & Distribution

Marine; freshwater; brackish; pelagic-neritic; anadromous ; depth range 0 - 50 m . Subtropical; 42°N - 21°N, 109°E - 134°E Northwest Pacific: Canton north to Ariake Sound, southwestern Japan, including all of Yellow Sea and off western coasts of Korea.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish 🐟 Pelagic
Migration
Anadromous
Feeding Mode
Planktivore
Trophic Level
3

📐 Morphometrics

Length–Weight Relationship: W = 0.00251 × L3.07 (TL)
Max TL
41cm
Anal Rays
80

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
25.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Temminck & Schlegel, 1846

🍽️ Edibility & Flavour

"Japanese grenadier anchovy is an edible species."

✗ Not for Raw
✓ Fresh Indicators
  • Clear, bright eyes — cloudy eyes indicate age
  • Firm flesh that springs back when pressed
  • Fresh ocean smell, never strong or ammonia-like
  • Bright red or pink gills, not grey or brown
  • Shiny, moist skin with scales tightly attached
✗ Avoid If
  • Cloudy or sunken eyes
  • Strong fishy or ammonia odour
  • Soft, mushy flesh that doesn't spring back
  • Discoloured or dry flesh
Best Cooking Methods
Baking Grilling Pan-frying

⚡ Nutrition

Detailed nutritional data for Japanese grenadier anchovy is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Japanese grenadier anchovy has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact

🔬 Full Nutritional Profile

Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (oily fish average)

Proximate Composition
Energy180 kcal
Moisture68 %
Protein22 %
Total Fat8 %
Ash1.4 %
Fatty Acids (g)
Saturated Fat1.8 g
Monounsaturated Fat2.6 g
Polyunsaturated Fat3.2 g
Omega-3 Total2 g
EPA0.6 g
DHA1.1 g
Omega-6 Total0.6 g
Key Minerals & Vitamins
Calcium15 mg
Iron0.9 mg
Magnesium28 mg
Phosphorus235 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium35 µg
Vitamin D550 IU
Vitamin B3 (Niacin)8 mg
Vitamin B123.2 µg

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Japanese grenadier anchovy
🌍CES sardel rypákovitá
🇯🇵Japanese Etsu · エツ
🇰🇷Korean 웅어
🇷🇺Russian Корейская коилия
🇨🇳Chinese 刀鱭 · 刀鲚

Scientific Synonyms

Scientific Name Author Year Status
Coilia ectenes Jordan & Seale 1905 Synonym
Coilia ectenes taihuensis Yuen, Lin, Liu & Qin 1977 Synonym
Colia ectens Jordan & Seale 1905 Synonym
Colia nasus Temminck & Schlegel 1846 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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