New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine 🍽️ Edible 🌡️ Deep-water

Pacific grenadier

Coryphaenoides acrolepis Bean, 1884
Max Length
104 cm
Max Weight
3.0 kg
Lifespan
73 yrs
Trophic Level
3.8
Depth
300–3700 m
Climate
Deep-water
Resilience
Very low
Vulnerability
79.00/100
Typical Length
46.9 cm
Depth Zone
deep-water

📖 Overview

A benthopelagic mid-slope species, that appears to wander off slope bottoms into midwater . Adults feed on small fish, euphausiids, prawns, amphipods and cephalopods . Oviparous, with planktonic larvae .

Scientific Name
Coryphaenoides acrolepis
Authority
Bean, 1884
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
Max Length
104 cm
Max Weight
3 kg
Lifespan
73 years
Depth Range
300–3700 m
Trophic Level
3.8
Resilience
Very low
Vulnerability
79.00/100
Migration
Non-migratory
Water Temp
1–4 °C
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 122; Anal spines: 0; Anal soft rays: 94. Head large, scaled completely except for a narrow ventrolateral strip on snout; eyes also large; snout short, pointed and with tubercular scales along its leading edge; chin with a small chin barbel. Body tapering to a point posteriorly from behind the insertion of the first dorsal-fin spine. Scales adherent, with 3 to 5 divergent rows of coarse spinules. Pyloric caeca 12 to 14. Overall color is gray to grayish-brown in young, turning to dark brown in adults; fins generally dark. Branchiostegal rays: 6-6 .: elongated; Cross section: circular.

🌀 Behaviour

Behavioural data for Pacific grenadier is currently being reviewed.

🦐 Diet

Diet information for Pacific grenadier is currently being compiled.

🥚 Reproduction

🐣 Oviparous
Size at Maturity
55.5cm TL

Oviparous .

🌍 Habitat & Distribution

Marine; bathydemersal; non-migratory; depth range 300 - 3700 m , usually 900 - 1300 m . Deep-water; 1°C - 4°C ; 62°N - 28°N, 134°E - 115°W North Pacific: northern Japan to Okhotsk and Bering seas, south along North American coasts to northern Mexico.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Migration
Non-migratory
Trophic Level
3.8±0.54
Food Items

small fish, euphausiids, prawns, amphipods and cephalopods (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00141 × L3.19 (TL)
Max TL
104cm
Max Weight
3,000g
Dorsal Spines
2
Dorsal Rays
122
Anal Rays
94

🌡️ Water Parameters & Tolerance

Temperature Range
1–4°C
Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
79.00/100
Very High vulnerability
Trophic Level
3.8
Predator
Body Shape
Elongated
Climate Zone
Deep-water
Described By
Bean, 1884

🍽️ Edibility & Flavour

"Pacific grenadier 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

Per 100g cooked - Source: USDA FoodData Central

Nutrient Amount
Protein 16.4 g
Omega-3 (total) 203 mg

🔬 Mercury Safety

Mercury data for Pacific grenadier 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

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Pacific grenadier · Roughscale Grenadier · roughscale rattail
🇫🇷French grenadier à écailles rudes
🇯🇵Japanese Ibarahige · イバラヒゲ
🇷🇺Russian Чёрный долгохвост · Черный макрурус

Scientific Synonyms

Scientific Name Author Year Status
Bogoslovius firmisquamis Gill & Townsend 1897 Synonym
Coryphaenoides bonanox Jordan & Thompson 1914 Synonym
Coryphaenoides firmisquamis Gill & Townsend 1897 Synonym
Hemimacrurus acrolepis Bean 1884 Synonym
Macrourus acrolepis Bean 1884 Synonym
Macrourus firmisquamis Gill & Townsend 1897 Synonym
Macrurus acrolepis Bean 1884 Synonym
Macrurus firmisquamis Gill & Townsend 1897 Synonym
Nematonurus acrolepis Bean 1884 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 48 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Pacific grenadier ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.