Great snakehead
📖 Overview
Obligate air-breathing ; Adults occur in sluggish or standing water in canals, lakes, and swamps . Theyinhabit waters with submerged aquatic vegetation . Usually found only in deep pools in rivers and occasionally in lakes. They enter flooded forest . Carnivorous and subsist on fish, frogs, snakes, insects, earthworms and tadpoles . There are reports of this species taking water birds, snakes, and rodents. Males are territorial. May bite when caught (Elliot Bligh, pers. comm., 2001).
🔬 Taxonomy
🐟 Physical Description
: elongated.
🌀 Behaviour
Behavioural data for Great snakehead is currently being reviewed.
🦐 Diet
🥚 Reproduction
Builds floating nest of weeds and leaves where the orange-yellow eggs are deposited. Eggs hatch in 36 to 48 hours and fry remain in the nest for about 10 days after hatching. Parents guards the fry for about a month.
🌍 Habitat & Distribution
Freshwater; benthopelagic; non-migratory . Tropical; 24°C - 28°C south to Thailand and Cambodia (Ref.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
⚠️ Venom Profile
- immediate intense pain
- swelling
- erythema
- occasional nausea and weakness
Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.
References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature
🚨 Invasive Species Impact
- competition with native species
- habitat modification
- management and control costs
- fishery impacts in some areas
Prevention of further spread through import bans, targeted removal in sensitive areas.
Monitoring and containment programs in place.
References: Compiled from IUCN Global Invasive Species Database, USGS Nonindigenous Aquatic Species database, and CABI Invasive Species Compendium.
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
🍽️ Edibility & Flavour
"Channa Marulius is an edible species."
- 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
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 18.3 g |
| Omega-3 (total) | 198 mg |
🔬 Mercury Safety
Mercury data for Great snakehead has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🔍 Similar Species
👥 Community & Contribute
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