B
Species Profile

Basilisk Lizard

Basiliscus

Kings of the riverbank sprint
Don Mammoser/Shutterstock.com

Basilisk Lizard Distribution

Click a location to explore more animals from that region

Invasive Species
Loading map...
Male plumed basilisk (Basiliscus plumifrons) sitting on a stump, Costa Rica.

At a Glance

Genus Overview This page covers the Basilisk Lizard genus as a group. Stats below are general traits shared across the genus.
Also Known As Jesus Christ lizard, Jesus lizard, Plumed basilisk, Common basilisk, Green basilisk, Basilisco, Lagarto basilisco
Diet Omnivore
Activity Diurnal
Lifespan 5 years
Weight 1 lbs
Status Least Concern
Did You Know?

The genus Basiliscus includes multiple species that can sprint bipedally; the best-known can even skim across water when moving fast.

Scientific Classification

Genus Overview "Basilisk Lizard" is not a single species but represents an entire genus containing multiple species.

Basilisks (Basiliscus) are medium-to-large arboreal lizards of the Neotropics, best known for sprinting bipedally and—when moving fast—skimming across the surface of water.

Kingdom
Animalia
Phylum
Chordata
Class
Reptilia
Order
Squamata
Family
Corytophanidae
Genus
Basiliscus

Distinguishing Features

  • Casque/helmet-like head and laterally compressed body typical of casque-headed lizards
  • Long tail; strong hind limbs enabling bipedal sprinting
  • Ability to run across water for short distances by slapping feet and trapping air pockets
  • Often exhibit crests (especially males) on head/back/tail, varying by species

Physical Measurements

Males and females differ in size

Length
2 ft 6 in (1 ft 10 in – 3 ft 1 in)
2 ft 1 in (1 ft 4 in – 2 ft 11 in)
Weight
1 lbs (0 lbs – 1 lbs)
1 lbs (0 lbs – 1 lbs)
Tail Length
1 ft 8 in (1 ft 2 in – 2 ft 2 in)
1 ft 8 in (12 in – 2 ft 4 in)
Top Speed
6 mph
About 6–10 km/h

Appearance

Primary Colors
Secondary Colors
Skin Type Basilisk lizards have overlapping scales, often keeled on the back and finer on head. Skin crests vary by species and sex. Toes aid fast running, gripping wet ground, and slapping water to run across.
Distinctive Features
  • Genus-level size range (smallest to largest members): typically ~40-90 cm total length including tail; snout-vent length commonly ~10-25 cm (tails make up the majority of total length).
  • Body build: medium-to-large, laterally compressed and agile, with long hind limbs and an especially long, whip-like tail used for balance during rapid running and bipedal bouts.
  • Casque-headed (Corytophanidae trait): a raised cranial casque/helmet-like head profile; degree of casque development varies among species and between sexes.
  • Crests/sails: many members show dorsal and/or caudal (tail) crests; the size and shape of these crests are among the most conspicuously variable features across species and sexes within the genus.
  • Riparian ecology: strongly associated with Neotropical waterways-streams, riverbanks, flooded forest edges, and overhanging vegetation-where they frequently perch above water and dive in when threatened.
  • Locomotion hallmark: capable of fast bipedal sprinting; when accelerating across water, they can skim the surface using rapid hind-foot slaps and hydrodynamic support (water-running ability varies with size, speed, and conditions).
  • Escape and refuge behavior: quick plunge into water is common; individuals can swim and remain submerged briefly, often moving to submerged cover along banks/roots.
  • Diet generalization: broadly insectivorous/arthropod-focused but opportunistic; larger individuals may take a wider range of prey (e.g., small vertebrates) and some plant material-diet breadth varies by species, size, and local availability.
  • Lifespan range across the genus: in the wild commonly ~4-10 years (variable by predation and environment); in captivity often ~8-12+ years with husbandry, occasionally longer.
  • Ontogenetic change: juveniles often show proportionally smaller crests and may have crisper banding/striping; coloration and crest prominence can shift with age and condition.

Sexual Dimorphism

Male and female Basiliscus often look different, though this varies by species and population. Males are usually larger and have bigger head, back, and tail crests for display. Females are smaller with reduced crests and duller color. Both remain riparian and arboreal.

  • Larger average body size and more robust head/neck in many species.
  • More developed cranial casque and taller dorsal/caudal crests or sail-like extensions; exact crest configuration varies substantially among species.
  • Often higher visual contrast in head/crest regions used in display (intensity and colors vary by species and individual).
  • Smaller average body size with reduced cranial casque and lower/less elaborate dorsal and tail cresting.
  • Coloration frequently more cryptic overall, though this varies by species/population and local habitat background.
  • Generally less exaggerated display structures, while retaining the same basic casque-headed profile characteristic of the genus.

Did You Know?

The genus Basiliscus includes multiple species that can sprint bipedally; the best-known can even skim across water when moving fast.

Water-running is aided by rapid foot slaps that trap air cavities and generate lift, plus fringed toes that increase surface area.

They're strongly tied to streams and riverbanks-when startled, many dive in and can stay submerged for several minutes.

Males of different species show striking variation in "crests" (head, back, and tail sails), used in display and dominance.

Across the genus, diets are broadly opportunistic: insects are common, but many also take small vertebrates and some fruit/plant matter.

The name Basiliscus comes from Greek for "little king," referencing their crownlike casque and crests.

Some species have become established outside their native range (e.g., in parts of Florida), showing how adaptable riparian lizards can be.

Unique Adaptations

  • Casque-headed build (Corytophanidae trait): a helmet-like cranial crest that enhances silhouette for communication and may aid species recognition.
  • Expandable crests/sails (species-variable): pronounced head/back/tail crests in some species, reduced in others; used for signaling and intimidation.
  • Toe fringe scaling: lateral fringes on the feet increase effective surface area, improving traction on mud/vegetation and contributing to water-running performance.
  • High acceleration gait mechanics: powerful hindlimbs, rapid stride cycling, and tail-assisted balance enable brief bipedal bursts on uneven riverbank terrain.
  • Streamside crypsis diversity: genus-level color patterns range from vivid greens to browns/striping, matching foliage, trunks, and muddy banks depending on species and locale.

Interesting Behaviors

  • Riparian escape routine: perch over water, then drop in and swim/dive to avoid predators; many remain submerged and resurface later.
  • Bipedal sprinting on land: fast bursts with the torso upright and tail used as a counterbalance; frequency and distance vary by species, age, and substrate.
  • Water-surface running: typically short, high-speed dashes across calm water; juveniles often perform better relative to body mass, but all species vary with conditions.
  • Arboreal vigilance: daytime basking and foraging from branches and trunks near open sun patches; retreat to higher perches when disturbed.
  • Display and territoriality: males often defend streamside perches and perform head-bobbing, push-ups, and crest-enhanced postures; intensity varies among species and habitats.
  • Seasonal/reproductive shifts: courtship and nesting typically track warm, wet-season conditions, with egg-laying in soil/sand banks near water (timing varies regionally).

Cultural Significance

Basilisk lizards (genus Basiliscus) are iconic riparian acrobats of the Neotropics and a rainforest wildlife favorite. Called "Jesus Christ lizards" for water‑skimming runs, they teach about sprinting, balance, and running on water.

Myths & Legends

In medieval European bestiaries, the 'basilisk' (the 'little king' of serpents) was said to kill with its gaze or breath. Lizard genus Basiliscus gets its name from that myth but is not the same creature.

The Christian Gospel story of Jesus walking on water has inspired the modern folk nickname "Jesus Christ lizard" for Basiliscus species that can dash across water surfaces.

Classical and medieval traditions sometimes portrayed the basilisk as crowned-an image echoed in the real animals' casque and crests, which likely helped cement the naming association among early naturalists and the public.

Conservation Status

LC Least Concern (genus-level summary: all currently IUCN-assessed Basiliscus species are listed as LC, but pressures and local trends vary regionally; some populations may be declining where riparian forest is heavily altered)

Widespread and abundant in the wild.

Population Unknown

Protected Under

  • Genus range (native): from southern Mexico through Central America into northwestern South America (e.g., Colombia), with species differing in exact distributions and habitat breadth; introduced populations occur in some areas (e.g., parts of Florida for B. vittatus).
  • Genus-level ecology/variation note (not a single-species profile): Basiliscus are generally diurnal, semi-arboreal lizards strongly associated with water/stream edges; they typically flee by dropping into water and may sprint bipedally, sometimes skimming across the surface. Diet is broadly omnivorous/insectivorous (invertebrates common; some species/age classes take more plant material or small vertebrates), and all are egg-layers; males are often more territorial and ornamented (crests vary markedly among species and sexes).
  • Genus-wide measurement and lifespan ranges (across species; substantial individual variation): adult total length commonly ~35-90 cm (tail comprising a large fraction), with snout-vent length roughly ~10-18+ cm; typical lifespan is often ~4-10 years in the wild and ~7-15 years in captivity depending on species and conditions.
  • Protection landscape: multiple Basiliscus populations occur within national parks and other protected areas across range states; there is no single genus-wide international legal protection, and regulatory coverage varies by country (general wildlife laws and protected-area management are most relevant).

You might be looking for:

Common basilisk / Jesus Christ lizard

45%

Basiliscus basiliscus

Widespread basilisk; famous for running across water; often the default species people mean by “basilisk lizard.”

Green basilisk / Plumed basilisk

25%

Basiliscus plumifrons

Bright green species with prominent crest; common in the pet trade and Central American rainforests.

Brown basilisk

20%

Basiliscus vittatus

More brown/striped; ranges into Mexico; commonly seen along waterways.

Western basilisk

10%

Basiliscus galeritus

Less commonly referenced species; occurs in parts of Central America.

Life Cycle

Birth 12 hatchlings
Lifespan 5 years

Lifespan

In the Wild
3–9 years
In Captivity
6–12 years

Reproduction

Mating System Polygyny
Social Structure Harem Based
Breeding Pattern Seasonal
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Basiliscus are diurnal, arboreal/semiaquatic lizards near water. They are mostly polygynous: males defend riparian territories and a harem of females. Reproduction is oviparous with internal fertilization (hemipenes). Breeding is seasonal; no parental care; hatchlings independent.

Behavior & Ecology

Social No specific group name (typically solitary; loose basking aggregations may occur) Group: 1
Activity Diurnal
Diet Omnivore Large, protein-rich insects and other readily captured arthropods (with fruit taken seasonally when abundant).

Temperament

Wary/flight-prone; rapid escape to water or dense vegetation is common across the genus
Male territoriality is common (visual threats, chases); intensity varies by species, season, and local population density
Tolerance of conspecifics is generally low outside breeding, but can increase where resources (basking perches, bankside cover) are clumped
Juveniles tend to be more secretive and sit-and-wait, relying heavily on concealment and short dashes
Arboreal-riparian ecology is typical genus-wide, with variation among species in degree of canopy use vs. low bank/near-water perching

Communication

hissing or short exhalation sounds when threatened/handled Generally infrequent
occasional distress squeaks/squeals reported under intense stress Not a primary communication mode
visual displays: head-bobs, push-ups, body elevation/lateral compression, and gular/crest enhancement in display contexts Species/sex differences in prominence
postural orientation and approach/retreat signaling during territorial interactions; chases are common escalation
chemical signaling: use of skin glands (e.g., femoral pore secretions) for contact/chemical cueing is likely important for mate/territory information, with reliance varying by context
tactile interaction mainly during mating and aggressive contact (biting/ramming), otherwise limited

Habitat

Biomes:
Tropical Rainforest Tropical Dry Forest Freshwater Wetland
Terrain:
Riverine Coastal Plains Valley Hilly
Elevation: Up to 5905 ft 6 in

Ecological Role

Riparian/forest-edge mesopredators and omnivores that link aquatic-edge and terrestrial food webs.

Regulation of arthropod populations (insect control) Occasional seed dispersal via fruit consumption Energy transfer between riparian vegetation, invertebrates, and higher predators (as both predator and prey) Support of food-web stability along stream and wet-forest edges by opportunistic predation/scavenging of small items (e.g., eggs, carrion)

Diet Details

Main Prey:
Insects Other arthropods Snails and small mollusks Small vertebrates Fish Bird eggs and hatchlings
Other Foods:
Fruits and berries Flowers and nectar-bearing plant parts Young leaves, shoots and soft plant matter

Human Interaction

Domestication Status

Wild

Basilisk lizards (genus Basiliscus) have no history of true domestication. People mainly meet them where habitats overlap—riparian forests, canals, plantations, and gardens—through wildlife watching, occasional conflicts when caught or moved, and the live-animal trade (mostly wild-caught; some captive breeding). They are wary and don't like being handled.

Danger Level

Low
  • Bites and scratches when cornered or handled (can be painful and may break skin, but not medically severe in most cases)
  • Zoonotic pathogen risk common to reptiles (notably Salmonella) via handling or contaminated surfaces
  • Allergic reactions/irritation from bites or contact are possible but uncommon
  • Indirect risks mainly relate to unsafe capture/handling near water or in dense vegetation (falls, slips), rather than the lizards themselves

As a Pet

Not Suitable as Pet

Legality: Laws differ by country, state, or province. Basiliscus may be legal where private reptile ownership is allowed, but import rules, care rules, and permits can apply. Check local laws first.

Care Level: Experienced

Purchase Cost: $50 - $400
Lifetime Cost: $2,000 - $12,000

Economic Value

Uses:
Pet trade (limited to moderate, varies by region) Ecotourism/wildlife viewing Education and research
Products:
  • live animals for the pet market (captive-bred and, historically in some supply chains, wild-caught)
  • exhibit animals for zoos/nature centers
  • indirect value through ecotourism (wild sightings along trails and waterways)

Relationships

Predators 8

Roadside hawk Rupornis magnirostris
Gray-lined hawk Buteo nitidus
Green heron
Green heron Butorides virescens
Boa constrictor
Boa constrictor Boa constrictor
Parrot snake
Parrot snake Leptophis ahaetulla
Common black hawk Buteogallus anthracinus
White-nosed coati Nasua narica
American crocodile Crocodylus acutus

Related Species 5

Helmeted iguana Corytophanes cristatus Shared Family
Hernandez's helmeted iguana Corytophanes hernandezii Shared Family
Ecuadorian Helmeted Iguana Corytophanes percarinatus Shared Family
Long-tailed casquehead Laemanctus longipes Shared Family
Serrated casquehead Laemanctus serratus Shared Family

Ecological Equivalents 5

Animals that fill a similar ecological role in their ecosystem

Green iguana Iguana iguana Broadly overlaps in Neotropical lowlands. Large, diurnal, arboreal to semi-arboreal lizard that often uses riparian trees and escapes predators by jumping into water.
Water anole Anolis aquaticus Shares riparian habitat use and water-associated escape behavior (diving and using water as a refuge), though it is much smaller and in a different family.
Black spiny-tailed iguana Ctenosaura similis In parts of Central America, it can share disturbed edges and forest margins; it is similarly diurnal and often omnivorous, uses trees and rocks, and relies on rapid sprinting to flee predators.
Caiman lizard
Caiman lizard Dracaena guianensis Another Neotropical lizard strongly tied to waterways. It occupies a more aquatic niche but overlaps in using riparian corridors and prey communities near water.
Asian water dragon Physignathus cocincinus Ecological analogue outside the Neotropics: a large, semi-arboreal riparian lizard that frequently dives or runs to water when threatened (convergent lifestyle, not close kin).

Types of Basilisk Lizard

4

Explore 4 recognized types of basilisk lizard

Common basilisk
Common basilisk Basiliscus basiliscus
Green basilisk (plumed basilisk) Basiliscus plumifrons
Brown basilisk (striped basilisk) Basiliscus vittatus
Western basilisk Basiliscus galeritus

The basilisk lizard, or the basilisk, is a beautiful but quite unpleasant reptile to be around.

They love spending their days in the rainforest near rivers and streams, which they can run quickly across without ever sinking.

Pay attention to their colors to help in your identification of each of the four species. While one species may only have brown and cream colors, another has bright green hues that let them blend with the lush Central and South American environment.

5 Incredible Basilisk Lizard Facts!

Male plumed basilisk (Basiliscus plumifrons) sitting on a stump, Costa Rica.

Male plumed basilisk (Basiliscus plumifrons) sitting on a stump, Costa Rica.

Here are some fun facts about this lizard.

  • The basilisk lizard is sometimes simply known as the basilisk.
  • When running, this lizard can reach a speed of 15 mph.
  • Due to their ability to run on water, the basilisk lizard is sometimes referred to as the Jesus lizard, referencing the story of Jesus Christ walking on water in the Bible.
  • Their price is fairly low to purchase as a pet, starting at just $3. However, the price may be as high as $20 with some distributors.
  • One of the many adaptations of the basilisk is its feet’s fringes. These adaptations make it possible for the lizard to run on the water’s surface without sinking.

Scientific Name

The basilisk lizard’s scientific name is Basiliscus, which is the genus that covers four different species – B. plumifrons, B. basiliscus, B. galeritus and B. vittatus. They are a part of the Corytophanidae of the Reptilia class. The name comes from the Greek word “basilískos,” which literally means “little king.”

Evolution and Origins

Due to its propensity to skim the water’s surface over short distances, the ancient species is also the earliest ancestor of the modern basilisk, commonly known as the Jesus Lizard. At 48 million years ago, Wyoming’s tropical rainforests were home to the earliest Corytophanidae.

The tropical jungles of Costa Rica, Honduras, Nicaragua, and Panama are home to green-crested basilisks. They live at heights between sea level and 2,542 feet and are regarded as semi-arboreal and semi-aquatic.

The green basilisk’s long-toed back legs, fringed skin, and unique scales on its feet enable it, like other basilisk lizards, to race across the water. Its feet smack the ground as it moves, generating an air pocket that keeps them from sinking.

Appearance

Part of the reason that the basilisk lizard is so interesting among the public is because of its incredible colors. Depending on the species, you’ll be able to find them in reds, greens, blues, and even yellows. The colors of the lizard help with the identification of which species they may be.

The common basilisk, for example, is brown and creamy. The plumed basilisk, on the other hand, ranges from bright to dark green, and some even end up a blue-green. Identification is easy because they often have a yellow belly and spots along their neck.

In general, the tail accounts for about 75% of the lizard’s total length. The average length (with the tail) is about 2.5 feet long. Their feet feature unique adaptations – like hinges and hollow bones – to help keep them on top of the water.

Colorful blue Basilisk Lizard in a terrarium. Basilisk lizards come in a variety of interesting colors.

Colorful blue Basilisk Lizard in a terrarium. Basilisk lizards come in a variety of interesting colors.

Behavior

As beautiful as the basilisk lizard is, make sure you never approach one in the wild. They are not friendly, and they become very skittish and afraid around humans. They are known for running on water to allow them to run away from predators and run toward their prey.

The lizards prefer to live a solitary lifestyle. Their days are often busy with foraging for food or spending time in the sun by the water. If they choose to sleep in a tree, they can go up to 20 meters high.

Habitat

If you want to find a basilisk lizard, you’ll need to travel to Central America and South America. This type of lizard prefers to live in the rainforest, staying close to the water that they like to run across. They’ll find places near rivers and streams, which are also their main hunting grounds.

These creators are semi-aquatic and semi-arboreal, living at elevations of up to 775 meters.

Diet

The diet of the basilisk lizard varies from one species to the next, but they are generally omnivores. They prefer to eat winged insects, though they will eat smaller prey that is available by the water near which they live. Their diet is 20% to 30% plant matter, and the rest is a combination of insects, spiders, small mammals, snails, and smaller lizards.

Predators and Threats

Green crested basilisk lizard sitting on the desert sand.

Green crested basilisk lizard sitting on the desert sand.

The basilisk lizard is a worthy predator, feeding primarily on insects. To catch them, the lizard seeks out prey in trees or even in the air.

They will run after their prey until they catch it, though their food comes much more easily as a pet. Running on the water is helpful to both their hunting and their escape from being hunted. When it is running on water, it can reach a speed of 15 mph.

As a pet, basilisk lizard babies require up to three meals a day, gathering as much as they can eat within just ten minutes. Just over 70% of their diet consists of insects and other animal life, while the rest is plant matter.

What Eats Basilisk Lizards?

Common predators of these lizards include large birds, snakes, fish, and other reptiles. The biggest predator for basilisks is the quetzal, which is a type of bird.

Diet

Each basilisk has an assortment of different foods that they eat. While all four species are omnivorous, the plumed basilisk lizard (also known as the green basilisk lizard) primarily prefers to follow a carnivorous diet. They stay close to the water so they can eat frogs and fish.

The redhead basilisk primarily eats insects, but they’ll look for arthropods, small vertebrates, and fish. The common basilisk lizard prefers a similar diet, though they’ll also consume freshwater shrimp, small birds, small reptiles, and small mammals. Juvenile common basilisks tend to rely mostly on insects as their source of nutrients.

The brown basilisk tends to be the most flexible with its diet, acting more opportunistically. They tend to eat aquatic larvae, insects, grasshoppers, and scorpions when they have the choice.

Reproduction and Life Cycle

Basilisk Lizard

Green basilisk (Basiliscus plumiforms) or Jesus Christ lizard. This impressive lizard can run over water! This one takes a rest.

Mating between these lizards is a unique process. While females only mate with one male during the mating season, males will take multiple partners.

The females often lay up to 4 clutches during the year, each of which is up to 20 eggs. The female lays the eggs in a trench and doesn’t take any time to care for them. She leaves them behind, and the babies hatch within 8-10 weeks, though it takes about 2 days for these lizards to fully come out of the shell during their life cycle.

From the moment these babies – also known as hatchlings – are born, they can immediately run-on land and water. They can also swim and climb from birth. They have no care from their mother or father as babies, and they reach sexual maturity as early as 10 months old, even though they are far smaller than their eventual adult size. Most of the time, females reach sexual maturity at a much faster rate.

The average lifespan of this lizard is 7 years when it is kept in captivity. In the wild, they are in constant peril as they protect themselves from predators, so they don’t have quite as long to live through their life cycle.

Population

In the entire world, there are four different species of this lizard in the world, which include the common basilisk lizard, red-headed basilisk lizards, plumed basilisk lizards (also known as a green basilisk lizard), and striped basilisk lizards.

While the total number of each of these species remains unknown, the IUCN classifies them all as “not extinct.” Currently, one of the biggest challenges to the worldwide population of this lizard is humans, as they are the reason behind their loss of habitat. The quetzal, a bird, is one of the natural challenges it faces in the animal kingdom.

View all 453 animals that start with B

Sources

  1. ITIS / Accessed February 6, 2022
  2. Pets on Mom / Accessed February 6, 2022
  3. Adapting Eden / Accessed February 6, 2022
  4. Prezi / Accessed February 6, 2022
  5. San Francisco Zoo & Gardens / Accessed February 6, 2022
  6. Wikipedia / Accessed February 6, 2022
  7. Wikipedia / Accessed February 6, 2022
  8. Adapting Eden / Accessed February 6, 2022
  9. Northampton Reptile Centre / Accessed February 6, 2022
  10. Reptiles / Accessed February 6, 2022
  11. Wonderopolis / Accessed February 6, 2022
Rebecca Bales

About the Author

Rebecca Bales

Rebecca is an experienced Professional Freelancer with nearly a decade of expertise in writing SEO Content, Digital Illustrations, and Graphic Design. When not engrossed in her creative endeavors, Rebecca dedicates her time to cycling and filming her nature adventures. When not focused on her passion for creating and crafting optimized materials, she harbors a deep fascination and love for cats, jumping spiders, and pet rats.
Connect:

Thank you for reading! Have some feedback for us?


Basilisk Lizard FAQs (Frequently Asked Questions)

This lizard is a reptile that primarily lives in Central America and South America. It lives near rivers and streams, and it can be found in many different colors. When in captivity, it has a potential lifespan of 7 years. It has an insectivorous diet, and it is commonly referred to as a Jesus lizard because of the way it is known for running on water.