M
Species Profile

Malayan Krait

Bungarus candidus

Night-banded, nerve-silencing hunter
Nenad Preradovic/Shutterstock.com

Malayan Krait Distribution

Click a location to explore more animals from that region

Loading map...
Malayan Krait

At a Glance

Wild Species
Also Known As Candid krait, Blue krait
Diet Carnivore
Activity Nocturnal+
Lifespan 12 years
Weight 1.5 lbs
Status Least Concern
Did You Know?

Despite being highly venomous, it's typically calm by day and relies on hiding rather than chasing threats.

Scientific Classification

A highly venomous nocturnal elapid (krait) native to parts of Southeast Asia, characterized by a slender body and contrasting dark-and-light banding. Like other kraits, it has potent neurotoxic venom and is medically significant.

Kingdom
Animalia
Phylum
Chordata
Class
Reptilia
Order
Squamata
Family
Elapidae
Genus
Bungarus
Species
candidus

Distinguishing Features

  • Elapid krait with prominent banding (often black/dark with pale bands), smooth glossy scales, and a relatively small head not strongly distinct from the neck
  • Nocturnal and secretive behavior; may enter human-modified habitats
  • Venom primarily neurotoxic, with risk of paralysis in envenomation

Physical Measurements

Length
3 ft 11 in (2 ft 11 in – 5 ft 3 in)
Weight
2 lbs (1 lbs – 3 lbs)
Tail Length
7 in (4 in – 10 in)
Top Speed
1 mph
slithering
Venomous

Appearance

Primary Colors
Secondary Colors
Skin Type Smooth, glossy scales; midbody dorsal scale rows typically 15, with enlarged hexagonal vertebral scales; head covered with large shields.
Distinctive Features
  • Adults commonly ~1.0-1.5 m total length; maximum reported about 2.0 m (e.g., Whitaker & Captain, 2004; Das, 2010).
  • Distinctive black-and-white/cream banding with a black head; pale upper lip often contrasts with dark head.
  • Dorsal scale rows typically 15 at midbody; ventrals commonly reported ~197-233; subcaudals ~37-56, usually paired (regional accounts in Smith, 1943; Das, 2010).
  • Body slender with a relatively short, tapering tail; vertebral scales enlarged, giving a subtly ridged appearance.
  • Nocturnal, secretive elapid; many bites occur during nighttime encounters or when handled (regional clinical/field summaries, e.g., Warrell, 1999).
  • Medically significant: venom dominated by potent neurotoxins causing progressive paralysis; envenoming may require urgent antivenom and ventilatory support (Warrell, 1999; WHO regional guidance).
  • Range: mainland Southeast Asia (Thailand, Cambodia, Laos, Vietnam) plus Peninsular Malaysia and Singapore; often in lowland forest edges, plantations, and agriculture-forest mosaics near human settlements (Das, 2010; regional herpetofaunal surveys).
  • Diagnostic vs some other Southeast Asian Bungarus: typically glossy black with crisp white/cream bands and 15 midbody dorsal scale rows; differs from yellow-banded kraits (B. fasciatus) by lacking broad yellow-and-black bands and a triangular cross-section.

Sexual Dimorphism

Dimorphism is subtle. Females commonly attain greater body length and girth, while males tend to have proportionally longer tails and, on average, higher subcaudal counts-features used in sexing preserved specimens and some field studies.

  • Proportionally longer tail length beyond the vent.
  • Often slightly higher subcaudal scale counts (population-dependent).
  • May appear more slender at the same total length.
  • On average larger maximum total length and more robust body.
  • Proportionally shorter tail beyond the vent.
  • May show lower average subcaudal counts than males (population-dependent).

Did You Know?

Despite being highly venomous, it's typically calm by day and relies on hiding rather than chasing threats.

Its venom is dominated by neurotoxins that can cause paralysis with little or no swelling at the bite site-making bites deceptively "quiet."

Like many kraits (genus Bungarus), it is strongly ophiophagous-snake-eating is a major part of its diet.

It's most active at night and is well known for entering yards, barns, and sometimes houses in rural areas.

Diagnostic clue vs the much larger Banded Krait (B. fasciatus): this species has narrow pale bands on a dark body, not broad yellow-and-black bands.

Kraits have enlarged vertebral (mid-dorsal) scales that can give the back a subtly ridged/triangular look in cross-section.

Medically, it's one of the most important elapids in parts of Thailand/Cambodia/Vietnam because bites can require prolonged ventilation support.

Unique Adaptations

  • Exceptionally neurotoxic venom profile: contains presynaptic and postsynaptic neurotoxins (including bungarotoxin-like components and PLA2-containing complexes) that disrupt neuromuscular transmission, producing progressive paralysis and respiratory failure risk.
  • "Deceptive" envenomation signature: relatively minor local pain/swelling compared with the severity of systemic neurotoxicity-an adaptation aligned with rapidly immobilizing prey (especially other snakes).
  • Smooth, glossy scales and slender body facilitate moving through tight ground cover, burrows, and dense agricultural vegetation at night.
  • Contrasting banding functions as high-contrast disruptive patterning in low light and may also serve as an aposematic warning signal to predators familiar with kraits.
  • Elapid front-fang delivery system: short, fixed fangs efficiently inject venom with minimal bite-and-hold time-useful against dangerous prey such as other snakes.

Interesting Behaviors

  • Strictly nocturnal activity pattern: typically shelters in burrows, under debris, in termite mounds, or thick leaf litter by day; emerges after dusk to forage.
  • Ambush-oriented hunting: moves slowly and methodically, following scent trails; frequently targets other snakes and small elongate vertebrates.
  • Human-proximity behavior: commonly occurs in forest-agriculture mosaics (plantations, field edges, irrigation margins) and may enter buildings at night while hunting rodents or other snakes.
  • Defensive posture typical of kraits: tight coiling with the head tucked low; may attempt to "hide" rather than display (less hooding/showiness than cobras).
  • Low-visibility biting risk: many clinically significant krait bites occur at night when people are sleeping on floors or walking unshod outdoors in rural settings.
  • Seasonal/local activity shifts: encounter rates often increase in warm, wet periods when prey and amphibians/reptiles are more active.

Cultural Significance

In Southeast Asia, the Malayan krait (Bungarus candidus) is a night snake that may bite. People use bed nets, avoid sleeping on floors, seal houses, and wear shoes at night. Kraits link to serpent deities and ideas of danger and guardians at village edges.

Myths & Legends

Naga traditions (Thailand/Laos/Cambodia): powerful serpent-deity beings associated with rivers, fertility, rain, and protection; local communities often interpret unusual river phenomena through naga stories, and real snakes encountered near waterways reinforce these beliefs.

Buddhist serpent-guardian motif (widespread in Southeast Asia): the serpent king Mucalinda shelters the meditating Buddha from a storm-an enduring temple-and-folklore image that elevates serpents as protectors despite their danger.

Mekong naga fireball lore (Thailand/Laos): seasonal river "fireballs" are blamed on a serpent deity; secretive nocturnal snakes near river farmland help keep serpent stories and beliefs alive among local people.

Southeast Asian folklore often portrays kraits as dangerous "night-biting" snakes: people may be bitten while asleep on the floor, feel little or no pain at the bite site, and not wake until paralysis develops.

Rural tale in mainland SE Asia: Malayan kraits are said to bite people sleeping at night because they are drawn to breath or warmth. People are told to sleep off the floor and use lights.

Conservation Status

LC Least Concern

Widespread and abundant in the wild.

Population Unknown

Life Cycle

Birth 8 hatchlings
Lifespan 12 years

Lifespan

In the Wild
8–20 years
In Captivity
12–25 years

Reproduction

Mating System Data Deficient
Social Structure Solitary
Breeding Pattern Transient
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Malayan kraits are solitary and meet mainly to mate; copulation uses internal fertilization, after which females lay eggs and provide no post-hatching care. The exact mating system (monogamy vs multiple mating) is not well documented for Bungarus candidus.

Behavior & Ecology

Social None (primarily solitary) Group: 1
Activity Nocturnal, Crepuscular
Diet Carnivore Other snakes (ophiophagy is the dominant prey category reported for Bungarus candidus).

Temperament

Secretive, non-social ambush/active-foraging snake; avoids conflict when possible (field observations across range).
Typically docile if undisturbed, but may bite defensively when handled, stepped on, or trapped.
Most individuals are solitary and shelter-focused by day; variation includes occasional refuge-sharing and seasonal shifts in movement/activity linked to prey and climate.
High medical significance: potent neurotoxic envenomation risk means defensive encounters can be severe despite generally non-aggressive demeanor.

Communication

Defensive hissing/exhalation (non-vocal, produced by airflow through glottis/trachea) [Greene 1997].
Chemical communication via pheromones (mate-finding and reproductive state signaling) detected by tongue-flicking/vomeronasal organ [Mason 1992; Halpern 1992].
Tactile courtship and mating contact (body alignment, rubbing, cloacal apposition), typical of snakes [Greene 1997].
Threat communication primarily through posture/coil tightening and withdrawal rather than prolonged visual displays Common in kraits; reported in field accounts

Habitat

Biomes:
Tropical Rainforest Tropical Dry Forest Wetland Freshwater
Terrain:
Plains Valley Hilly Coastal Riverine Island
Elevation: Up to 3937 ft

Ecological Role

Nocturnal mesopredator specializing on other reptiles (notably snakes), contributing to regulation of small-vertebrate communities.

Population control of other snakes and small reptiles (top-down regulation within leaf-litter/edge habitats) Energy transfer across trophic levels as a predator and as prey for higher predators (e.g., raptors and mammalian carnivores) Potential indirect effects on prey species interactions by preferentially removing fossorial/cryptic snakes

Diet Details

Main Prey:
Other snakes Lizard Amphibians

Human Interaction

Domestication Status

Wild

Bungarus candidus (Malayan krait) has no domestication history. Human contact is mainly conflict (snakebite), rescue/relocation, and keeping in serpentariums for venom and antivenom work. Some facilities keep and sometimes breed them, but not for tameness. They are nocturnal, often near homes, neurotoxic, slender with dark-and-light bands, about 1–1.5 m.

Danger Level

Extreme
  • Potentially fatal neurotoxic envenomation; rapid progression to paralysis and respiratory failure without ventilatory support.
  • Bites often occur at night (nocturnal activity), including in and around homes; victims may be asleep or barefoot, increasing delayed recognition.
  • Minimal early local pain/swelling is commonly reported for krait bites, which can delay seeking care while systemic neurotoxicity evolves.
  • High medical resource requirement: antivenom (when available/appropriate), airway management, and potentially prolonged mechanical ventilation.
  • Handling risk: calm appearance can mislead; kraits can deliver severe envenomation with short strikes when restrained or stepped on.

As a Pet

Not Suitable as Pet

Care Level: Expert Only

Purchase Cost: Up to $500
Lifetime Cost: $5,000 - $25,000

Economic Value

Uses:
Public health (medical significance) Biomedical research Antivenom/venom supply chain Ecosystem services (predation on other snakes/small vertebrates)
Products:
  • venom used for research on neurotoxins (presynaptic and postsynaptic neurotoxic components reported in Bungarus spp.)
  • regionally produced antivenoms used clinically for krait envenoming (availability and cross-neutralization vary by product and geography)
  • educational/awareness programs (snakebite prevention; hospital training; rescue/relocation outreach)

Relationships

Predators 5

King cobra
King cobra Ophiophagus hannah
Burmese python
Burmese python Python bivittatus
Asian water monitor
Asian water monitor Varanus salvator
Small Asian mongoose Urva javanica
Crested Serpent Eagle Spilornis cheela

Related Species 10

Banded krait
Banded krait Bungarus fasciatus Shared Genus
Many-banded krait Bungarus multicinctus Shared Genus
Red-headed krait Bungarus flaviceps Shared Genus
Common krait Bungarus caeruleus Shared Genus
Greater black krait Bungarus niger Shared Genus
Sind krait Bungarus sindanus Shared Genus
Monocled cobra
Monocled cobra Naja kaouthia Shared Family
Indochinese spitting cobra Naja siamensis Shared Family
King cobra
King cobra Ophiophagus hannah Shared Family
Asian coral snake Calliophis bivirgatus Shared Family

Ecological Equivalents 5

Animals that fill a similar ecological role in their ecosystem

Banded krait
Banded krait Bungarus fasciatus Sympatric, nocturnal elapid in Southeast Asia. Overlaps in habitat use (lowlands and edges of human settlement) and in general feeding ecology (small vertebrates), and shares a similar medically significant neurotoxic envenoming risk.
Common krait Bungarus caeruleus Ecological analogue in South Asia: nocturnal, secretive, often peri-domestic, and associated with bites at night. Similar krait life history (crepuscular/nocturnal activity, emphasis on rodents and other snakes as prey) and a neurotoxic clinical syndrome.
Monocled cobra
Monocled cobra Naja kaouthia Shares many of the same lowland agricultural and peri-urban habitats across parts of mainland Southeast Asia; overlaps in prey base (especially rodents and frogs) and human-snake conflict patterns, though cobras are generally more diurnal/crepuscular and more defensive.
King cobra
King cobra Ophiophagus hannah Occupies overlapping forest-edge habitats in Southeast Asia and targets similar trophic resources (snakes). Although typically larger and more diurnal, it functions as a high-level snake predator in the same regions.
Common wolf snake Lycodon capucinus Nocturnal, often encountered around buildings and commonly hunts geckos and other small reptiles and amphibians. Overlaps strongly in nighttime microhabitat use (walls, yards, debris) and is frequently confused with banded venomous snakes due to superficial similarity.

“The Five-Step Snake”

The Malayan or blue krait is one of those snakes that people call a “five-step snake.” This means that if it bites and envenomates you, you can take about five steps before you drop dead. The blue krait isn’t quite that venomous, but its venom is indeed powerful. If a person isn’t treated, it can kill them as quickly as 12 hours after they’ve been envenomated, and even juvenile snakes can deliver a deadly bite. The very good news is that this snake is so tame that some people aren’t afraid to pick it up. With its vivid black and white bands and slender body, the Malayan krait is also uniquely beautiful.

4 Amazing Facts About Malayan Kraits

Here are four amazing facts about the Malayan krait.

  • Though they are famously banded snakes, there are individuals that are not banded at all but are a solid color, usually black.
  • The bite of the blue krait is said to be nearly painless. This is dangerous because it gives the venom time to do a lot of damage before symptoms occur.
  • The snake’s venom, by the way, is 15 times more potent than that of the common cobra.
  • Malayan kraits eat other snakes, including conspecifics.

Where To Find Malayan Kraits

Malayan kraits are found, as their name says, in Malaysia. They are also found in Indonesia in the countries of Bali and Java. The snake also lives in southeast Asian countries such as Cambodia, Myanmar, Thailand, Vietnam, and Laos. They are also found in Singapore. They prefer a habitat that’s close to water, and so can be found in plantations, moist evergreen forests, shrub land, and places where the soil is sandy. They are found at elevations as high as 3937 feet.

Scientific Name

Malayan Krait

The Malayan Krait’s scientific name is Bungarus candidus and it has no subspecies.

The scientific name of the Malayan krait is Bungarus candidus. Bungarus is from the Telugu word baṅgāru, which means “golden.” This most likely refers to the Malayan krait’s cousin the banded krait, whose bands are golden instead of white. Candidus is Latin for “shining white.” The Malayan krait has no subspecies.

Evolution And Origin

All modern snakes of today can be traced back to just a few species of snakes that lived 66 million years ago, during the Cretaceous–Paleogene era, and were alive, and survived, the extinction event that occurred during this time. As a result of snakes’ ability to go underground, they were able to not only survive but move into new habitats and new environments which then created a diversification of their species.

The Different Types Of

Though the Malayan krait has no subspecies, there are several species of krait in the Bungarus genus. They include the banded krait, the common krait, the Ceylon krait, the red-headed krait, and the Burmese krait. Other members of the genus are the northeastern hill krait, the South Andaman krait, the Sind krait, and the Persian krait.

Appearance And Description

Malayan Krait

The Malayan Krait is one of the most dangerous snakes in the world!

The Malaysian krait is a snake with a ribbon-like body that grows to about 3.6 feet in length. The most striking thing about the snake is its black or blue-black and white or yellowish-white crossbands that extend from the head to the tail. The first dark band is a continuation of the color of the small head and neck. The white bands might be speckled with black, and the snake’s abdomen is white. There’s a tiny spike at the tip of the tail. The scales along the snake’s back and sides are smooth, the nostrils are large, and the eyes are small with round, black pupils. The Malayan krait can be found in several types of habitats, especially those that are near bodies of water.

The Malayan krait should not be confused with a sea krait. Sea kraits are members of the Laticauda genus, and they are semi-aquatic. Though they resemble terrestrial kraits such as those in the Bungarus genus, their tails have evolved to resemble paddles and help them swim. However, sea kraits, like Bungarus kraits still have to lay their eggs and digest their prey on land.

Venom: How Dangerous Are They?

man holding malayan krait

Though wildly dangerous, the Malayan krait has a reputation for being docile.

The Malayan krait is one of the most dangerous snakes on earth, and even juveniles are dangerous The mortality rate for an untreated envenomation is a stunning 60 to 70 percent. The snake’s venom is made up mostly of neurotoxins, which means it attacks the nervous system. After a bite, a person may experience nausea and vomiting, headache, stomach pain, dizziness, and diarrhea. Paralysis and convulsions happen when the nerves stop working the way they should. Without treatment, the person may die within 12 to 24 hours of being bitten. Fortunately, there is an antivenin for the venom of a Malayan krait.

Behavior And Humans

malayan krait on isolated background

The Malayan krait is a surprisingly docile nocturnal snake.

Though it may attack when cornered, the Malayan krait is surprisingly docile and shy. Found in a variety of habitats from moist forests to plantations to rice paddies to villages, it is a nocturnal snake that hides during the day. If it’s found in its hiding place, it will slither away quickly or try to cover its head with its own tail to avoid trouble. It can strike without any threat display if it feels it can’t escape.

The blue krait hunts for its prey at night which is unusual for venomous snakes. Other venomous snakes tend to lie in wait for prey, ambush them and wait for their venom to kill or incapacitate them before swallowing them. Bungarus candidus eats other snakes and now and then takes a lizard or a small mammal. They lay eggs, often in the burrow of a rat they’ve probably had for dinner.

Males seem to engage in ritual combat for the right to mate, and the eggs are laid in the spring and hatch in the summer. The female lays about four to 10 eggs, and when the babies are born they’re about a foot long and look like the adults. Juveniles are fully independent and have a good supply of venom from birth.

The blue krait’s conservation status is the least concern though it is used for food, skin, and traditional medicine.

View all 329 animals that start with M

Sources

  1. Wikipedia What do blue kraits eat? / Accessed May 10, 2022
  2. Reptile-Database / Accessed May 10, 2022
  3. Thai National Parks / Accessed May 10, 2022
  4. Snack Facts / Accessed May 10, 2022
  5. ITIS / Accessed May 10, 2022
  6. Clinic Toxinology Resources / Accessed May 10, 2022
  7. Walk Through India / Accessed May 10, 2022
Melissa Bauernfeind

About the Author

Melissa Bauernfeind

Melissa Bauernfeind was born in NYC and got her degree in Journalism from Boston University. She lived in San Diego for 10 years and is now back in NYC. She loves adventure and traveling the world with her husband but always misses her favorite little man, "P", half Chihuahua/half Jack Russell, all trouble. She got dive-certified so she could dive with the Great White Sharks someday and is hoping to swim with the Orcas as well.
Connect:

Thank you for reading! Have some feedback for us?


Malayan Krait FAQs (Frequently Asked Questions)

The Malayan krait is extremely venomous. If a person isn’t treated, the chance of death from a blue krait bite is between 60 and 70 percent. Even if the wound is treated, the probability of death is about 50 percent.