Brown Basilisk (Basiliscus vittatus) Care Sheet
The Brown Basilisk (Basiliscus vittatus), also known as the Striped Basilisk, is a medium-to-large, fast-moving, diurnal lizard native to Mexico and Central America. Like other members of the genus Basiliscus, it is strongly associated with vegetation surrounding rivers, streams and other bodies of water and is both an accomplished climber and swimmer.
Although less dramatically coloured than the Green Basilisk (Basiliscus plumifrons), the Brown Basilisk has essentially the same athletic body plan: long hind limbs, elongated toes and an exceptionally long tail. Adult males develop prominent crests on the head, back and tail.
The species is famous for its ability to sprint across the surface of water. Enlarged hind feet and fringed toes help support the animal for a short distance before it begins swimming.
Brown Basilisks are adaptable animals and have successfully established introduced populations outside their native range, most famously in Florida. This adaptability should not be mistaken for an ability to thrive in inadequate captive housing.
They are active, highly visual and often extremely nervous reptiles.
Successful husbandry requires:
- A large, tall enclosure
- Extensive climbing structure
- Dense visual cover
- A substantial clean water area
- Strong daytime illumination
- Appropriate UVB
- A controlled basking area
- A broad thermal gradient
- High but well-ventilated humidity
- Deep substrate
- Suitable nesting areas for mature females
- A varied invertebrate-based diet
- Minimal unnecessary handling
Captive-bred animals should be strongly preferred.
Quick facts
Scientific name: Basiliscus vittatus
Common names: Brown Basilisk, Striped Basilisk
Family: Corytophanidae
Origin: Mexico and Central America
Lifestyle: Semi-arboreal, terrestrial and semi-aquatic
Activity: Diurnal
Adult size: Commonly approximately 60–75 cm (24–30 in) total length; large males may approach approximately 80 cm (31 in)
Diet: Omnivorous predator, with invertebrates forming an important component of the diet
Day ambient temperature: Approximately 25–28°C (77–82°F)
Basking surface: Approximately 32–35°C (90–95°F)
Cool area: Approximately 23–25°C (73–77°F)
Night temperature: Approximately 20–24°C (68–75°F)
Humidity: Approximately 60–80%, with temporary higher peaks after misting
UVB: Recommended as an essential component of high-quality long-term husbandry
Suggested UVI: Approximately 3–4 at the principal exposed basking position, with substantial shade and retreats approaching zero
Adult enclosure: At least approximately 180 × 90 × 150 cm (6 × 3 × 5 ft) for one adult; larger strongly preferred
Water: Large bathing/swimming area required
Housing: Individual housing safest
Reproduction: Egg-laying
Handling: Minimal
Experience level: Intermediate
Taxonomy
The accepted scientific name is:
Basiliscus vittatus
It belongs to:
Family: Corytophanidae
Genus: Basiliscus
The genus also contains:
- Common Basilisk (Basiliscus basiliscus)
- Western Basilisk (Basiliscus galeritus)
- Green Basilisk (Basiliscus plumifrons)
Identification
Brown Basilisks are relatively slender lizards with:
- Long hind limbs
- Long toes
- An extremely long tail
- Brown to olive-brown colouration
- Pale lateral striping
- Darker crossbars or markings
The exact colour and contrast vary between:
- Individuals
- Age classes
- Sexes
- Geographic populations
Sexual dimorphism
Adult males are considerably more ornate than females.
Mature males develop:
- A prominent head crest
- A dorsal crest
- A tail crest
- A more robust head
- Larger overall proportions
Females possess much less developed crests.
Juveniles
Juveniles resemble small females and generally lack the dramatic crests of mature males.
Sexual differences become increasingly obvious as animals mature.
Natural distribution
Brown Basilisks occur naturally from:
Mexico through much of Central America.
Their native range includes areas of:
- Mexico
- Belize
- Guatemala
- Honduras
- El Salvador
- Nicaragua
- Costa Rica
- Panama
Introduced populations
The species has become established outside its native range.
The best-known introduced populations occur in:
Florida, USA.
These populations demonstrate the species’ adaptability but also illustrate why captive animals must:
never be released.
Natural habitat
Brown Basilisks occur in:
- Tropical forest
- Secondary forest
- Woodland edges
- Riparian vegetation
- Scrub
- Human-modified habitats
They are particularly associated with:
vegetation close to water.
Riparian lifestyle
Typical habitat contains:
- Streams
- Rivers
- Canals
- Pools
- Dense vegetation
- Branches
- Roots
Water functions as an important:
escape route.
Semi-arboreal behaviour
Brown Basilisks are excellent climbers.
They frequently use:
- Tree trunks
- Branches
- Roots
- Shrubs
- Dense vegetation
Captive housing must therefore provide meaningful:
vertical space.
Terrestrial activity
The species also spends considerable time:
- Running across the ground
- Foraging
- Moving between vegetation
This means enclosure design must provide both:
height and floor space.
Semi-aquatic behaviour
Brown Basilisks are excellent swimmers.
If threatened, an animal may:
- Sprint toward water
- Run briefly across the surface
- Dive
- Swim underwater
Running on water
Brown Basilisks possess specialised:
elongated hind feet and fringed toes.
Rapid downward and backward movement of the feet creates pockets of air and sufficient force for lightweight animals to travel short distances across the water surface.
Juveniles and water running
Smaller animals are generally more effective at water running than:
heavy adults.
Large adults enter normal swimming sooner.
Activity
Brown Basilisks are:
diurnal.
They require bright daytime conditions and a clear day/night cycle.
Temperament
The species is often:
- Alert
- Nervous
- Fast
- Reactive
- Easily startled
This is not usually aggression.
It is primarily:
flight behaviour.
Captive-bred animals
Captive-bred individuals generally adjust to captivity better than wild-caught animals.
They may become accustomed to:
- Keeper presence
- Feeding routines
- Normal enclosure maintenance
However, many remain unsuitable for frequent handling.
Rostral damage
Repeated attempts to flee through transparent enclosure walls can cause:
- Nose rubbing
- Scale damage
- Swelling
- Open wounds
- Infection
This is one of the most important preventable problems in captive basilisks.
Visual barriers
Use:
- Dense foliage
- Opaque enclosure sides
- Textured backgrounds
to reduce the perception of an endless escape route through glass.
Enclosure size
For one adult, provide at least approximately:
180 × 90 × 150 cm (6 × 3 × 5 ft).
For a large adult male:
180 × 90 × 180 cm (6 × 3 × 6 ft)
or larger is preferable.
Larger is better
Where space permits, approximately:
240 × 120 × 180 cm (8 × 4 × 6 ft)
provides substantially better opportunities for:
- Movement
- Climbing
- Swimming
- Thermal choice
- Visual security
Why large housing is necessary
Brown Basilisks are:
- Fast
- Long-bodied
- Semi-arboreal
- Semi-aquatic
- Active
A cramped enclosure increases the risk of:
- Chronic stress
- Rostral injury
- Poor muscle development
- Obesity
- Stereotypic escape behaviour
Enclosure orientation
Provide both:
substantial height and substantial length.
Branches
Create a complex network of:
- Horizontal branches
- Diagonal branches
- Vertical trunks
- Roots
- Cork
Branch diameter
Provide several branch diameters.
Primary adult perches should be thick enough for the feet to grip comfortably without forcing the toes into an unnatural position.
Basking branches
Position secure branches beneath:
- Basking lamp
- UVB
at appropriate distances.
Branches over water
Provide branches directly:
above the aquatic section.
This allows natural escape and resting behaviour.
Dense foliage
Provide extensive foliage throughout the enclosure.
Suitable live plants may include:
- Pothos
- Philodendron
- Ficus
- Schefflera
- Dracaena
- Other robust non-toxic tropical plants
Visual security
A basilisk should be able to sit in several locations where it is:
partially or completely concealed.
Terrestrial area
Provide a substantial land area containing:
- Deep substrate
- Plants
- Leaf litter
- Hides
- Digging areas
Substrate
Suitable substrate mixtures include:
- Organic topsoil
- Coco fibre
- Fine orchid bark
- Leaf mould
- Leaf litter
Substrate depth
Provide at least approximately:
10–15 cm (4–6 in).
Female nesting area
Mature females require substantially deeper substrate.
Provide a nesting area approximately:
20–30 cm (8–12 in)
deep.
Why every mature female needs a laying area
Female reptiles can develop eggs even when they have not recently mated.
Lack of suitable nesting substrate can contribute to:
- Prolonged digging
- Stress
- Egg retention
Nest substrate
Suitable nesting substrate should be:
- Diggable
- Slightly moist
- Able to hold a tunnel
- Deep enough for complete burial of the clutch
Leaf litter
Provide a generous surface layer of:
leaf litter.
Hides
Useful retreats include:
- Cork tubes
- Dense vegetation
- Root structures
- Elevated foliage
Many basilisks prefer vegetative concealment over conventional ground caves.
Water area
A substantial water area should be provided.
The animal must be able to:
- Fully submerge
- Turn around
- Swim
- Exit easily
Water size
For an adult, a basin around:
90 × 60 cm (36 × 24 in)
or larger is highly beneficial where enclosure dimensions allow.
Water depth
Approximately:
20–40 cm (8–16 in)
works well for healthy adults.
Easy exits
Provide several exit points using:
- Branches
- Cork
- Sloping banks
- Rocks
- Roots
Water filtration
Large permanent aquatic areas should normally use:
aquarium-style filtration.
Suitable options include:
- External canister filters
- Internal filters
- Sump systems
Filter safety
Protect filter intakes so animals cannot:
- Become trapped
- Become pinned against suction
- Enter pipework
Water hygiene
Basilisks frequently defecate in water.
This means water can become contaminated very rapidly.
Water changes
Carry out regular:
partial water changes.
Water testing
For permanent filtered aquatic sections, periodically monitor:
- Ammonia
- Nitrite
- Nitrate
Ammonia and nitrite should remain:
effectively zero.
Water temperature
Maintain water approximately:
23–26°C (73–79°F).
Dechlorination
Treat chlorinated or chloraminated tap water with an appropriate aquarium conditioner where necessary.
Temperature
Brown Basilisks require a warm tropical environment with a proper thermal gradient.
Day ambient temperature
Maintain most of the enclosure around:
25–28°C (77–82°F).
Warm upper zone
Upper branches can reach ambient temperatures around:
28–30°C (82–86°F).
Basking surface
Provide a local basking surface around:
32–35°C (90–95°F).
Cool area
Provide shaded areas around:
23–25°C (73–77°F).
Thermal gradient
The animal should be able to move between:
- Hot basking branch
- Warm vegetation
- Moderate shade
- Cooler lower enclosure
- Water
Avoid uniform heat
Do not maintain the entire enclosure at:
30°C+ (86°F+).
Night temperature
Allow nighttime temperatures to fall toward:
20–24°C (68–75°F).
Night heating
If room temperature remains safely within range:
night heating is unnecessary.
If supplemental heating is required, use a lightless thermostatically controlled source.
Heating
Use:
overhead heating
to create natural daytime basking opportunities.
Thermostat
Control all significant heating equipment with an:
appropriate thermostat.
Temperature monitoring
Use digital thermometers to monitor:
- Warm upper zone
- Cool lower zone
- Water
Use an infrared thermometer to measure basking surfaces.
Lighting
Brown Basilisks are active, diurnal reptiles and benefit from:
bright daytime illumination.
Visible lighting
A large planted enclosure may require bright full-spectrum visible lighting in addition to:
- UVB
- Basking lamps
Photoperiod
Approximately:
12 hours light / 12 hours dark
works well for routine husbandry.
Night lighting
Provide:
complete darkness at night.
Avoid permanently illuminated red, blue or purple lamps.
UVB
UVB should be provided as a routine part of long-term husbandry.
Suggested UV Index
Aim for approximately:
UVI 3–4
at exposed basking branches.
UV gradient
Provide:
- UVI 1–2 in partially shaded locations
- Areas below UVI 1
- Dense retreats around UVI 0
What this means in practice
For a large adult enclosure, a quality:
linear T5 UVB lamp
is generally appropriate.
The exact output class and distance depend upon:
- Lamp model
- Reflector
- Mesh
- Enclosure height
Do not choose UVB by percentage alone
A lamp labelled:
6%, 7%, 10% or 12%
does not tell you the UVI reaching the animal.
Mesh
Mesh can substantially reduce UVB.
Measure below the mesh rather than assuming manufacturer distance charts apply unchanged.
UV meter
Where possible, use an appropriate UV meter.
This is particularly valuable with arboreal species because climbing changes the distance between the animal and lamp.
Humidity
Maintain general relative humidity around:
60–80%.
Humidity peaks
Humidity may temporarily rise above:
80%
after misting.
Daily cycle
Allow some daytime drying while retaining:
- Moist substrate
- Water
- Humid vegetation
Ventilation
High humidity must be combined with:
good airflow.
Misting
Mist approximately:
once or twice daily
depending upon environmental conditions.
Automated misting
An automated misting system can be very useful in large planted enclosures.
Hydration
Provide hydration through:
- Clean water basin
- Misting
- Leaf droplets
- Moist food
Diet
Brown Basilisks are:
opportunistic omnivorous predators.
Animal prey forms a major component of the diet.
Natural prey
Wild animals consume items including:
- Insects
- Spiders
- Other arthropods
- Small vertebrates
- Snails
Some plant material may also be consumed.
Captive staple foods
A varied captive diet should include:
- Locusts
- Crickets
- Roaches
- Silkworms
- Black soldier fly larvae
- Earthworms
- Hornworms
- Captive-produced snails
- Other suitable invertebrates
Dietary variety
Do not feed:
only crickets.
Earthworms
Earthworms provide useful:
- Moisture
- Protein
- Dietary variety
Snails
Captive-produced snails can be offered.
Avoid wild molluscs from areas exposed to:
- Slug pellets
- Pesticides
- Fertilisers
Vertebrate prey
Large wild basilisks may opportunistically consume small vertebrates.
Routine captive rodent feeding is:
unnecessary.
Plant foods
Small amounts of suitable plant matter may occasionally be accepted.
Possible foods include limited amounts of:
- Soft berries
- Papaya
- Mango
- Suitable leafy vegetation
These should be:
supplementary rather than the dietary foundation.
Gut loading
Feeder insects should be:
properly gut loaded.
Calcium
Dust appropriate feeder insects with:
calcium.
Multivitamin
Use an appropriate reptile multivitamin according to a sensible schedule.
Vitamin D3
D3 supplementation should be adjusted according to actual:
UVB exposure.
Avoid chronic excessive supplementation.
Adult feeding
Healthy adults can generally be fed:
approximately 3 times per week.
Juvenile feeding
Growing juveniles can be fed:
daily or near-daily
before gradually reducing frequency as growth slows.
Reproductive females
Females producing eggs require particular attention to:
- Calcium
- Hydration
- UVB
- Protein
- Overall body condition
Body condition
Adults should remain:
lean and athletic.
Do not encourage obesity.
Feeding enrichment
Encourage natural hunting by using:
- Branch-mounted feeding cups
- Controlled free-ranging insects
- Different feeding positions
Uneaten insects
Remove excessive uneaten feeders.
Dead insects entering the water can quickly reduce water quality.
Handling
Brown Basilisks should generally be treated as:
observation animals.
Why handling is difficult
They can be:
- Extremely fast
- Easily frightened
- Powerful jumpers
Frequent capture may create chronic stress.
Acclimatisation
A well-established captive-bred animal may learn to:
- Remain calm during maintenance
- Approach for feeding
- Tolerate keeper presence
This should be the goal rather than forced handling.
Necessary handling
When handling is necessary:
- Secure the room first
- Support the entire body
- Avoid squeezing
- Keep the animal low over a safe surface
- Keep handling brief
Never grab the tail
Do not catch or lift a basilisk by:
the tail.
Social housing
Individual housing is the:
safest default.
Adult males
Do not routinely house:
adult males together.
Territorial aggression can be severe.
Male and female housing
A male may repeatedly breed with a female.
Permanent pair housing can result in:
- Persistent courtship
- Repeated clutches
- Female depletion
Group housing
Groups should only be attempted in exceptionally large enclosures with:
- Multiple basking sites
- Multiple feeding stations
- Dense visual barriers
- Large water area
Signs of incompatibility
Watch for:
- Chasing
- Biting
- Exclusion from basking areas
- Persistent hiding
- Feeding suppression
- Weight loss
- Rostral injury
Reproduction
Brown Basilisks are:
oviparous — egg-laying.
Breeding condition
Only breed healthy mature animals.
Females should have:
- Excellent body condition
- Correct calcium status
- Appropriate UVB
- Good hydration
- Deep nesting substrate
Courtship
Adult males may display using:
- Head movements
- Body posture
- Crests
- Pursuit
Mating may involve gripping of the female.
Gravid female behaviour
A gravid female may:
- Gain abdominal volume
- Increase basking
- Change appetite
- Become restless
- Begin exploratory digging
Nesting
Provide a laying area at least approximately:
20–30 cm (8–12 in) deep.
Nest substrate
A useful mixture includes:
- Organic soil
- Sand
- Coco fibre
It should be:
slightly moist and capable of holding an excavation.
Clutch size
Brown Basilisk clutch size varies with:
- Female age
- Size
- Condition
Approximately:
5–15 eggs
is a useful general range, with variation possible.
Multiple clutches
Healthy females may produce:
more than one clutch during a reproductive season.
This can significantly deplete body reserves.
Monitor females closely
Record:
- Weight
- Feeding
- Calcium intake
- Laying dates
- Clutch sizes
Egg handling
If eggs are artificially incubated:
- Handle gently
- Avoid rotation
- Maintain orientation
- Prevent dehydration
- Avoid direct contact with standing water
Incubation medium
Suitable media include:
- Vermiculite
- Perlite
The medium should remain:
moist, not saturated.
Incubation temperature
A practical range is approximately:
27–29°C (81–84°F).
Incubation duration
At appropriate temperatures, hatching commonly occurs after approximately:
8–12 weeks.
Incubation duration varies with temperature.
Avoid excessive incubation heat
Do not increase incubation temperature simply to obtain faster hatching.
Developmental stability is more important than speed.
Hatchlings
Hatchlings are:
- Small
- Extremely fast
- Alert
- Capable climbers
- Capable swimmers
Hatchling housing
Provide a secure, vertically structured enclosure with:
- Fine branches
- Dense foliage
- UVB
- A gentle basking area
- High humidity
- Easy access to water
Hatchling visual security
Dense cover is particularly important.
Young basilisks may repeatedly collide with transparent walls when frightened.
Hatchling water
Provide enough water for:
- Soaking
- Swimming
but include numerous easy exits.
Hatchling temperature
Maintain daytime ambient temperatures around:
25–28°C (77–82°F).
Hatchling basking
Provide a limited basking surface around:
31–33°C (88–91°F).
Hatchling night temperature
Allow temperatures to fall toward:
21–24°C (70–75°F).
Hatchling humidity
Maintain approximately:
70–85%.
Provide good ventilation.
Hatchling UVB
Provide approximately:
UVI 2–3
at exposed branches with extensive shaded retreats.
Hatchling diet
Suitable foods include:
- Small crickets
- Small roach nymphs
- Small black soldier fly larvae
- Small silkworms
- Small earthworms
- Other appropriately sized live invertebrates
Hatchling feeding
Offer appropriately sized prey:
daily or near-daily during rapid growth.
Hatchling supplementation
Growing animals require:
- Correct UVB
- Proper gut loading
- Calcium
- Appropriate multivitamin supplementation
Quarantine
All newly acquired Brown Basilisks should undergo quarantine.
At least:
90 days
is a sensible minimum.
Wild-caught animals
Wild-caught specimens may carry:
- Internal parasites
- External parasites
- Dehydration
- Rostral injuries
- Chronic stress
Captive-bred animals are strongly preferred.
Parasite screening
Veterinary faecal examination is particularly advisable for:
- Wild-caught animals
- Animals of uncertain history
- Animals losing weight
- Animals with persistent abnormal faeces
Common health concerns
Potential problems include:
- Rostral trauma
- Metabolic bone disease
- Dehydration
- Poor shedding
- Respiratory disease
- Parasites
- Water-related bacterial disease
- Obesity
- Reproductive complications
Rostral trauma
Rostral injury is particularly important in nervous basilisks.
Repeated nose rubbing may cause:
- Abrasions
- Swelling
- Tissue damage
- Secondary infection
Prevention
Improve:
- Enclosure size
- Visual barriers
- Foliage
- Keeper approach
- Environmental security
rather than simply treating repeated injuries.
Metabolic bone disease
Possible signs include:
- Tremors
- Weakness
- Soft jaw
- Limb deformity
- Spinal deformity
- Poor climbing
Prevention of MBD
Provide:
- Appropriate UVB
- Calcium
- Correct supplementation
- Nutritious feeders
- Correct temperatures
Dehydration
Possible signs include:
- Sunken eyes
- Reduced activity
- Poor shedding
- Loss of skin elasticity
Review:
- Water
- Misting
- Humidity
- Temperature
Respiratory disease
Warning signs include:
- Wheezing
- Clicking
- Nasal discharge
- Open-mouth breathing when not basking
- Increased respiratory effort
Seek veterinary assessment.
Water-related disease
Poorly maintained water can expose the animal repeatedly to:
- Bacteria
- Organic waste
- Ammonia
Maintain strict aquatic hygiene.
Obesity
Adult animals can become overweight if:
- Overfed
- Given excessive fatty prey
- Fed rodents regularly
- Maintained in undersized housing
Reproductive complications
Females may suffer from:
- Calcium depletion
- Follicular problems
- Egg retention
- Dystocia
Possible egg-binding
Warning signs include:
- Repeated unsuccessful digging
- Persistent abdominal enlargement
- Straining
- Severe lethargy
- Weakness
- Loss of appetite
Seek veterinary care promptly.
Veterinary red flags
Consult a suitably experienced reptile veterinarian for:
- Persistent anorexia
- Significant weight loss
- Major rostral wounds
- Abnormal breathing
- Severe dehydration
- Tremors
- Weakness
- Major injuries
- Persistent abnormal faeces
- Prolapse
- Suspected reproductive problems
Bioactive housing
Brown Basilisks can thrive in a properly designed:
large tropical bioactive enclosure or paludarium.
Clean-up crew
Suitable terrestrial clean-up crew may include:
- Tropical springtails
- Appropriate tropical isopods
Aquatic filtration
A bioactive terrestrial section does not eliminate the need for:
proper water filtration.
Cleaning
Spot-clean terrestrial areas regularly.
Remove:
- Faeces
- Dead prey
- Shed
- Rotten plant material
- Excess mould
Water maintenance
Regularly:
- Remove debris
- Service filters appropriately
- Perform partial water changes
- Test water where necessary
Conservation
The Brown Basilisk remains widespread across much of its native range and has demonstrated considerable ecological adaptability.
Nevertheless, animals should still be sourced responsibly.
CITES
Basiliscus vittatus is not generally listed under CITES.
National and local legislation may nevertheless regulate:
- Import
- Export
- Keeping
- Transport
- Sale
Invasive-species considerations
Because Brown Basilisks have established introduced populations in areas including Florida, preventing escape and release is especially important.
Never release captive animals
Never release a Brown Basilisk into the wild.
Release can:
- Establish invasive populations
- Spread pathogens
- Affect native wildlife
- Violate legislation
Provenance
Retain:
- Breeder information
- Purchase records
- Hatch date where known
- Feeding history
- Health information
Common husbandry mistakes
Common mistakes include:
- Providing an enclosure that is too small
- Providing insufficient height
- Providing insufficient floor space
- Providing too few climbing branches
- Providing no branches over water
- Providing inadequate visual cover
- Leaving all walls transparent
- Ignoring repeated nose rubbing
- Providing only a small drinking bowl
- Providing dirty water
- Providing inadequate filtration
- Providing no easy exits from water
- Maintaining the entire enclosure at basking temperature
- Providing no cool retreat
- Keeping humidity too low
- Keeping humidity high without ventilation
- Providing no UVB
- Providing excessive UVB without shade
- Feeding only crickets
- Routine rodent feeding
- Poor gut loading
- Inadequate calcium
- Excessive handling
- Chasing the animal for handling
- Housing adult males together
- Keeping mature females without nesting substrate
- Allowing repeated egg production to deplete females
- Failing to quarantine
- Purchasing unnecessarily wild-caught animals
- Releasing unwanted animals
Responsible ownership
Before obtaining a Brown Basilisk, ensure you can provide:
- A very large enclosure
- At least approximately 180 × 90 × 150 cm (6 × 3 × 5 ft) long-term accommodation
- Substantial height
- Extensive climbing structure
- Dense foliage
- Visual barriers
- A large clean water area
- Effective filtration
- Regular water maintenance
- Deep terrestrial substrate
- Appropriate nesting substrate for females
- Tropical humidity with good ventilation
- Correct basking temperatures
- Cooler shaded retreats
- Bright daytime lighting
- Appropriate UVB
- A varied invertebrate-based diet
- Correct calcium and vitamin supplementation
- Minimal handling
- Protection against collision injuries
- Quarantine facilities
- Reptile veterinary care
- Legal provenance
- Long-term commitment
Summary
The Brown Basilisk (Basiliscus vittatus) is a fast, alert, semi-arboreal and semi-aquatic lizard native to Mexico and Central America.
Adults commonly reach approximately:
60–75 cm (24–30 in),
with large males potentially approaching:
80 cm (31 in).
For one adult, provide at least approximately:
180 × 90 × 150 cm (6 × 3 × 5 ft),
with larger housing strongly preferred.
The enclosure should contain:
- Extensive climbing branches
- Dense visual cover
- A large terrestrial section
- Deep substrate
- A substantial swimming area
- Multiple easy water exits
Maintain daytime ambient temperatures around:
25–28°C (77–82°F)
with a local basking surface around:
32–35°C (90–95°F).
Provide cooler shaded areas around:
23–25°C (73–77°F)
and allow nighttime temperatures to fall toward:
20–24°C (68–75°F).
Maintain humidity around:
60–80%
with good ventilation.
Provide approximately:
UVI 3–4
at exposed basking branches while maintaining extensive shaded retreats.
Feed a varied diet based predominantly upon live invertebrates such as:
- Locusts
- Roaches
- Crickets
- Earthworms
- Silkworms
- Black soldier fly larvae
Brown Basilisks are:
egg-laying.
Females require deep nesting substrate and may produce multiple clutches. A practical clutch range is approximately:
5–15 eggs,
with incubation commonly lasting approximately:
8–12 weeks
under appropriate conditions.
The species is naturally nervous, and repeated forced handling should be avoided.
Captive-bred animals should be strongly preferred.
The most important aspects of successful long-term care are:
space, visual security, clean water, climbing structure, appropriate UVB and minimising chronic stress.
IMPORTANT INFORMATION:
This care sheet provides general husbandry guidance and does not replace species-specific research or veterinary advice. Individual requirements may vary.
Always check current legislation governing the acquisition, collection, import, transport, keeping, breeding or sale of reptiles in your jurisdiction.
If you have concerns about an animal’s health or care, consult a suitably experienced exotic or reptile veterinarian.
Information correct at the date of publication.
reptilecommunity.com | Revised: August 2026