Red-Bellied Black Snake (Pseudechis porphyriacus)

The Red-Bellied Black Snake, Pseudechis porphyriacus, is a native Australian snake best known for its glossy dark upper body and red, pink or orange colouring along the lower sides and belly. It is a species in the elapid family, the group that includes many venomous Australian snakes. [1] [2] [4]

It is often associated with water and is a familiar snake in parts of eastern Australia. Seeing one is not a reason to approach it: the safest outcome for people, pets and snake is distance and time for the animal to move away. [1] [3]

Identification: useful clues, not a safe way to decide

An adult Red-Bellied Black Snake usually has a uniform black, smooth and glossy back, a snout that is often pale brown, and bright crimson on the lowest side scales. The belly colour can fade through red, orange or pink; in the north of its range it may be greyish-pink to white. Its head is only slightly distinct from the neck, and the underside of the tail is black. [1]

Australian Museum collection information places average adult total size at about 1.5–2 metres, although size varies and should never be used to judge whether a snake is safe. [1] A long, dark snake beside water may fit this description, but visual similarity is not confirmation. The Australian Museum notes potential confusion with Blue-bellied Black Snakes, Small-eyed Snakes and copperheads. [1]

For that reason, identification is an observation exercise, not something to test. Do not move closer for a better view, corner the snake, pick it up or rely on colour, length or behaviour to rule out danger. Healthdirect advises that snakes can be hard to identify and that all snake bites should be treated as medical emergencies. [3]

Australian range and habitat

This is an eastern and south-eastern Australian species. The Australian Museum records separate occurrences in northern and central eastern Queensland, then a more continuous distribution from south-eastern Queensland through eastern New South Wales and Victoria, plus a separate population at the southern end of South Australia’s Mount Lofty Ranges. It does not occur on Kangaroo Island. [1]

The species is strongly associated with moist places. Streams, swamps and lagoons are typical habitat, including within forests, woodlands and grasslands. It may also occur away from water, in disturbed places and on rural properties, and has been recorded around drainage canals and farm dams. [1] Victorian wildlife guidance similarly identifies river and creek banks, swamps and wet forests as places where the species may occur. [2]

Near a waterway, remember that habitat is not a guarantee that a snake is present, and a dry-looking setting is not a guarantee that it is absent. Red-Bellied Black Snakes can shelter in thick grass, logs, mammal burrows, dreys and beneath large rocks. [1] Give potential shelter space rather than reaching, stepping or placing hands where you cannot see clearly.

Behaviour, activity and ecological role

Red-Bellied Black Snakes primarily feed on vertebrates including fish, tadpoles, frogs, lizards, snakes and mammals. They search for prey on land and in water, and may forage with only the head underwater or submerge completely. [1] Their connection to wet habitat therefore reflects both shelter and feeding opportunities.

The Australian Museum describes the species as primarily diurnal, although it can remain active into the late evening when temperatures allow. In spring, males searching for females may spend more time in the open and travel farther than females; activity changes later in the warmer season. [1] These details can help explain why an animal may be noticed near a track or water, but they are not a schedule people should use to predict safety.

When surprised, a Red-Bellied Black Snake may freeze or try to escape. If it cannot get away, it may raise its forebody, spread its neck and hiss. [1] That is defensive behaviour, not an invitation to assess its mood or take a photograph at close range. Back away slowly enough to create space and keep observing from a distance only if it can be done without blocking the animal’s exit.

Safer encounters at home, on tracks and near water

Most safety decisions are straightforward: avoid adding pressure to an already-alert animal. Healthdirect advises people who see a snake not to panic, to back away to a safe distance and let it move away; snakes often seek to escape when disturbed. [3]

• Stop and create distance. Keep children and pets away without approaching, chasing or attempting to herd the snake. [3]
• Leave its route open. Do not corner it against a fence, wall, water’s edge or shelter. The aim is separation, not removal by a bystander. [1] [3]
• Do not touch or attempt a close identification. This includes a snake that appears still, injured or dead; the Victorian wildlife fact sheet says never to approach or handle a snake. [2]
• Use care in likely cover. Healthdirect lists water, long grass, bushland, leaf litter, sheds and yards among places where snakes may be encountered. A torch is recommended when walking outside at night. [3]

If a snake is in a place where people cannot safely keep their distance, use an appropriately licensed local wildlife or snake-removal service rather than attempting capture, relocation or killing. Victorian guidance specifically advises residents not to move a snake themselves and to seek a licensed snake controller. [2]

Suspected bite: emergency medical response

A bite can leave obvious puncture marks, small scratches or marks that are hard to see. Symptoms vary with the snake and may take time to develop, so feeling well or being uncertain about what caused the bite is not a reason to wait. [3]

Call 000 and ask for an ambulance immediately after a possible venomous snake bite. Do not wait to identify the snake. [3] While help is coming, move away from the snake if needed, keep the bitten person still and calm, and follow the instructions of emergency services and other official first-aid guidance. [3]

Do not try to catch, kill or photograph the snake for identification. Do not wash the bite area, apply a tourniquet, cut the wound or attempt to suck out venom. These actions can add risk or interfere with medical assessment. [3] Medical teams decide whether antivenom is needed; it is not a decision to make at the scene. [3]

Frequently asked questions

Is a Red-Bellied Black Snake venomous?

Yes. Pseudechis porphyriacus is an elapid, and Victorian wildlife guidance describes it as venomous and front-fanged. [2] Treat an encounter with care and any suspected bite as an emergency, regardless of how mild it looks. [3]

Where in Australia might I see one?

The main continuous range runs from south-eastern Queensland through eastern New South Wales and Victoria. The species also has separate occurrences in northern and central eastern Queensland and at the southern end of the Mount Lofty Ranges in South Australia. [1] Moist habitat near creeks, swamps, lagoons and wet forest is particularly relevant. [1] [2]

Can I identify one safely from its red belly?

No. A black upper body with red or pink lower sides is a useful field clue, but it is not a safe basis for handling or close inspection. Similar-looking snakes occur in parts of the range, and colour can vary, including paler bellies in the north. [1] Keep your distance and treat an unknown snake with the same caution.

What should I do if I see one near a creek or walking track?

Stop, keep back and allow it room to leave. Do not put hands into grass, logs, rock gaps or other shelter to locate it. Healthdirect’s general advice is to back away to a safe distance and let the snake move away on its own. [3]

Should I wait for symptoms before calling 000 after a possible bite?

No. Healthdirect states that all snake bites must be treated as potentially life-threatening and advises calling 000 for an ambulance. [3] Do not wait for symptoms or for someone to identify the snake.

References

1. [1] Red-bellied Black Snake | Australian Museum
2. [2] Red-bellied Black Snake wildlife fact sheet | Victorian Government
3. [3] Snake bites | Healthdirect Australia
4. [4] Red-bellied black snake fact sheet | Field of Mars EEC