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🌊 Marine Critically Endangered 🍽️ Edible 🌡️ Deep-water

Roundnose grenadier

Coryphaenoides rupestris Gunnerus, 1765
Max Length
110 cm
Max Weight
1.7 kg
Lifespan
54 yrs
Trophic Level
3.7
Depth
180–2600 m
Climate
Deep-water
Resilience
Low
Vulnerability
72.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Benthopelagic to bathypelagic in about 400 and 1200 m depth. Minimum depth from Ref. 1371. Form large schools at 600 to 900 m depth . Feed on a variety of fish and invertebrates, but primarily on pelagic crustaceans such as shrimps, amphipods and cumaceans; cephalopods and lantern fishes constitute a lesser portion of the diet. Batch spawner . This species is currently facing overexploitation in the North Atlantic. Utilized frozen and for fishmeal; can be fried and baked .

Scientific Name
Coryphaenoides rupestris
Authority
Gunnerus, 1765
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
IUCN Status
CR
Max Length
110 cm
Max Weight
1.7 kg
Lifespan
54 years
Depth Range
180–2600 m
Trophic Level
3.7
Resilience
Low
Vulnerability
72.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 2; Anal spines: 0. Head broad, rather soft; snout broad, rounded, with a large blunt tubercular scute at its tip; chin with small barbel. Scales relatively adherent; spinules dense on body scales, long, thin and recurved, narrowly lanceolate, with longitudinal anterior concavity. Pyloric caeca 29 to 31, long and slender. Color medium brown to grayish; orbits, oral and branchial cavities, and fins blackish to brownish gray.: elongated; Cross section: circular.

🌀 Behaviour

Behavioural data for Roundnose grenadier is currently being reviewed.

🦐 Diet

Diet information for Roundnose grenadier is currently being compiled.

🥚 Reproduction

Size at Maturity
52.7cm TL

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 180 - 2600 m , usually 400 - 1200 m . Deep-water; 73°N - 20°N, 77°W - 32°E North Atlantic: from about 37°N to Baffin Island and Greenland in the western Atlantic, and off Iceland and Norway to 73°N to Barents Sea, south to North Africa in the eastern Atlantic.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.7±0.56
🐠 Schooling
Food Items

a variety of fish and invertebrates, but primarily on pelagic crustaceans such as shrimps, amphipods

📐 Morphometrics

Length–Weight Relationship: W = 0.00219 × L3.2 (TL)
Max TL
110cm
Max Weight
1,700g
Dorsal Spines
2

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
72.00/100
High vulnerability
Trophic Level
3.7
Predator
Body Shape
Elongated
Climate Zone
Deep-water
Described By
Gunnerus, 1765

🍽️ Edibility & Flavour

"Roundnose 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 17.3 g
Omega-3 (total) 104 mg

🔬 Mercury Safety

Mercury data for Roundnose 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

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 31 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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View all observations for Roundnose grenadier ↗
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