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

💧 Freshwater Data Deficient 🍽️ Edible 🌡️ Subtropical

Dark snakehead

Channa nox Zhang, Musikasinthorn & Watanabe, 2002
Max Length
19.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.7
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
21.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Obligate air-breathing ; Generally restricted to relatively narrow regions, characterized by humid rainforest climate .

Scientific Name
Channa nox
Authority
Zhang, Musikasinthorn & Watanabe, 2002
Habitat
Freshwater
Climate
Subtropical
Body Shape
Elongated
IUCN Status
DD
Max Length
19.8 cm
Trophic Level
3.7
Resilience
High
Vulnerability
21.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 47 - 51; Anal soft rays: 31 - 33; Vertebrae: 53 - 55. Dorsal surface of the body dark; 8-11 irregular (often anteriorly pointed V-shaped) black blotches or bands on upper half of the body; a white-rimmed black ocellus on caudal peduncle; sparse white spots on body and dorsal and caudal fins. Hyomandibular process with the mid- to lower lateral edge mesially protruded. One to 2 small to medium-sized scales found on the undersurface of each side of the lower jaw. Pelvic fin absent. Cheek scales 9-13 .: elongated.

🌀 Behaviour

Behavioural data for Dark snakehead is currently being reviewed.

🦐 Diet

Diet information for Dark snakehead is currently being compiled.

🥚 Reproduction

Reproduction data for Dark snakehead is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.7±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00813 × L2.98 (TL)
Max TL
19.8cm
Dorsal Rays
49
Anal Rays
32
Vertebrae
54

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
3.7
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Zhang, Musikasinthorn & Watanabe, 2002

🍽️ Edibility & Flavour

"Dark snakehead 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 Dark snakehead is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Dark snakehead 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 Dark snakehead · night snakehead
🇳🇱Dutch Nacht Slangekopvis

🗺️ 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
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Dark snakehead ↗
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.