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🌊 Marine Vulnerable 🍽️ Edible 🌡️ Polar

Kerguelen sandpaper skate

Bathyraja irrasa Costaz, 1980
Max Length
120 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
565–1218 m
Climate
Polar
Resilience
Low
Vulnerability
72.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother . Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats . Egg capsules are 11.38 cm long and 7.36 cm wide .

Scientific Name
Bathyraja irrasa
Authority
Costaz, 1980
Habitat
Marine
Climate
Polar
IUCN Status
VU
Max Length
120 cm
Depth Range
565–1218 m
Trophic Level
4
Resilience
Low
Vulnerability
72.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Kerguelen sandpaper skate is currently being compiled.

🌀 Behaviour

Behavioural data for Kerguelen sandpaper skate is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous

Oviparous, paired eggs are laid. Embryos feed solely on yolk . Distinct pairing with embrace. Young may tend to follow large objects, such as their mother .

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 565 - 1218 m . Polar; 48°S - 51°S Southern Ocean: around the Kerguelen Islands.

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.13 (TL)
Max TL
120cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
72.00/100
High vulnerability
Trophic Level
4
Apex / Top predator
Climate Zone
Polar
Described By
Costaz, 1980

🍽️ Edibility & Flavour

"Kerguelen sandpaper skate 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 14.4 g
Omega-3 (total) 401 mg

🔬 Mercury Safety

Mercury data for Kerguelen sandpaper skate 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 (generic fish average)

Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg

📊 Population Dynamics

Year Region Index Notes
- - -

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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