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🌊 Marine 🍽️ Edible 🌡️ Polar

Unicorn icefish

Channichthys rhinoceratus Richardson, 1844
Max Length
60 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
1–750 m
Climate
Polar
Resilience
Medium
Vulnerability
46.00/100
Typical Length
40 cm
Depth Zone
demersal

📖 Overview

Adults are found from near shore to farther than 750 m. Feed mainly on fishes and occasionally on algae.

Scientific Name
Channichthys rhinoceratus
Authority
Richardson, 1844
Habitat
Marine
Climate
Polar
Body Shape
Elongated
Max Length
60 cm
Depth Range
1–750 m
Trophic Level
3.3
Resilience
Medium
Vulnerability
46.00/100
Salinity
30–40 ppt

🐟 Physical Description

Vertebrae: 54 - 58. : elongated.

🌀 Behaviour

Behavioural data for Unicorn icefish is currently being reviewed.

🦐 Diet

Diet information for Unicorn icefish is currently being compiled.

🥚 Reproduction

Reproduction data for Unicorn icefish is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 1 - 750 m . Polar; 46°S - 57°S, 61°E - 83°E endemic to the Kerguelen-Heard Plateau, Antarctica.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.3±0.54
Food Items

fishes and occasionally on algae

📐 Morphometrics

Length–Weight Relationship: W = 0.00132 × L3.46 (TL)
Max TL
60cm
Vertebrae
56

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
46.00/100
Moderate-High vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Polar
Described By
Richardson, 1844

🍽️ Edibility & Flavour

"Channichthys Rhinoceratus 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 17.5 g
Omega-3 (total) 240 mg

🔬 Mercury Safety

Mercury data for Unicorn icefish 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

👥 Community & Contribute

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