Animal field guide
Northern Snakehead
Channa argus
A long, cylindrical predatory fish of weedy East Asian waters, growing to about 85 centimetres, with a single dorsal fin running most of its back. Paired chambers above the gills let it gulp air at the surface, so it can live in warm, stagnant water with almost no dissolved oxygen.
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Animal · East Asia · Shallow · Relatively common
Known for: Long, Dark, Long anal fin mirroring the dorsal fin on the, Large mouth with the lower jaw jutting forward
Animal field guide
Northern Snakehead
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A long, cylindrical predatory fish of weedy East Asian waters, growing to about 85 centimetres, with a single dorsal fin running most of its back. Paired chambers above the gills let it gulp air at the surface, so it can live in warm, stagnant water with almost no dissolved oxygen.
Native range
Natural range, not this capture location
Shallow, still or slow water thick with plants over soft mud: ponds, marshes, swamps, reservoirs, canals, rice fields and weedy backwaters of large rivers, from the Amur basin south through Korea and eastern China.
Search near meAnimalDex stats
Dominance
45
Speed
40
Size
30
Intelligence
30
Rarity
30%
Total
175
Size scale
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STEP 3 · BATTLE & FUSE
Understand the animal
Understand the Northern Snakehead
Factual biology first: what this animal is like, where it lives, how it survives, and why those traits exist.
01
Introduction to Northern Snakehead
A long, cylindrical predatory fish of weedy East Asian waters, growing to about 85 centimetres, with a single dorsal fin running most of its back. Paired chambers above the gills let it gulp air at the surface, so it can live in warm, stagnant water with almost no dissolved oxygen.
How to identify a Northern Snakehead
- Long, almost cylindrical body with a flattened, snake-like head
- Dark, irregular blotches along a tan to brown flank
- Long anal fin mirroring the dorsal fin on the underside
- Large mouth with the lower jaw jutting forward
- Rounded tail fin without a fork
Why Northern Snakehead are interesting
- It is often said to crawl overland between ponds, but evidence for this in the species is weak.
- It tolerates water from near freezing to over 30 degrees Celsius, which lets it survive under winter ice in the north of its range.
- It is an important food fish in China and Korea, farmed in ponds and often sold live in markets.
- It has been reported to survive several days out of water provided its skin stays moist.
02
Adaptations and biological abilities
03
Why does Northern Snakehead behave this way?
- Long, almost cylindrical body with a flattened, snake-like head
- Dark, irregular blotches along a tan to brown flank
- Long anal fin mirroring the dorsal fin on the underside
- Large mouth with the lower jaw jutting forward
- Rounded tail fin without a fork
Thought to be most active around dawn and dusk and into the night; much of the day is spent lying still among plants just below the surface.
04
Why Shallow?
Habitat: Shallow, still or slow water thick with plants over soft mud: ponds, marshes, swamps, reservoirs, canals, rice fields and weedy backwaters of large rivers, from the Amur basin south through Korea and eastern China.
Native range: East Asia
Native range
Natural range, not this specific capture location.
Shallow, still or slow water thick with plants over soft mud: ponds, marshes, swamps, reservoirs, canals, rice fields and weedy backwaters of large rivers, from the Amur basin south through Korea and eastern China.
05
Why this diet?
Adults eat mostly other fish, ambushed from cover with a fast lunge, and also take crayfish, shrimp, frogs and aquatic insects. Young fish start on zooplankton and small invertebrates before switching to fish.
06
Activity, rest, and lifespan
Thought to be most active around dawn and dusk and into the night; much of the day is spent lying still among plants just below the surface.
Wild fish are commonly reported to live up to about 8 years; captive longevity is not well documented.
07
Northern Snakehead reproduction
A pair clears a ring in dense weed and builds a floating nest of plant stems, where the female releases hundreds to many thousands of buoyant, oily eggs. Both parents guard the eggs, which hatch in about one to five days depending on temperature, and then the swarm of fry for several weeks.
Males and females look very similar and cannot be reliably told apart by eye, although ripe females carry a fuller belly before spawning.
08
Predators, threats, and defense
Herons, other wading birds and larger fish take the young, while adults have few enemies apart from people, who catch large numbers for food. When disturbed it dives into dense weed and may press into the soft bottom.
09
Conservation and rarity
Rarity: Relatively common · 30/100. AnimalDex canonical rarity score: 30/100, maintained by the live indexed species profile.
- Observe from a respectful distance and avoid changing the animal's behavior.
- Do not block feeding, shelter, nesting, or travel routes.
- Use a live camera capture without handling or staging wildlife.
Speak to the animal
Speak to the Northern Snakehead
It answers as itself: ask about how it lives, or bring it something of yours and hear what it would do, from its own Power.
Anonymous: 3/day. Signed-in: 10/day. Pro: 100/day.
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Compare the Northern Snakehead
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Battled in the Arena
No one has taken a Northern Snakehead into an Arena battle yet. Battles players fight with this animal in the AnimalDex app show up here.
Where to find them
Where to find Northern Snakehead
To find Northern Snakehead in the wild, focus on the exact habitat patches that match its body design and daily behavior, not just the broad country where it exists. You usually do better by working one good piece of habitat inside east Asia than by covering too much ground.
- Quiet marsh edges, reedbeds, river bends, or shallow wetland margins
- Protected habitat blocks within east Asia
Scientific name
Channa argus
Category
Animal
Habitat
Shallow, still or slow water thick with plants over soft mud: ponds, marshes, swamps, reservoirs, canals, rice fields and weedy backwaters of large rivers, from the Amur basin south through Korea and eastern China.
Rarity
Relatively common · 30/100
Native range
East Asia
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