Meller’s Chameleon (Trioceros melleri) Care Sheet
Meller’s Chameleon (Trioceros melleri) is one of Africa’s largest chameleons and one of the most impressive species maintained in specialist herpetoculture. Sometimes called the Giant One-horned Chameleon, it is native to south-eastern Africa, particularly Malawi, Mozambique and Tanzania.
Adults are large, powerful arboreal reptiles capable of reaching approximately 50–60 cm (20–24 in) total length, with exceptional individuals becoming larger.
Despite their imposing size, Meller’s Chameleons are not simply larger versions of commonly kept Veiled or Panther Chameleons. They originate from environments where they experience warm but generally moderate days, substantial seasonal rainfall, cooler nights and access to dense vegetation.
Successful husbandry requires:
- Exceptionally spacious arboreal accommodation
- Strong, interconnected branches
- Moderate daytime temperatures
- A clear nighttime temperature reduction
- Excellent ventilation
- High-quality hydration
- Appropriate humidity cycling
- Measured UVB
- Strong visible-spectrum lighting
- A varied live-invertebrate diet
- Careful supplementation
- Minimal unnecessary handling
Historically, many Meller’s Chameleons in captivity were wild-caught imports. Such animals frequently arrived dehydrated, parasitised and severely stressed. Documented captive-bred animals should be strongly preferred.
This species is best considered:
advanced specialist chameleon husbandry.
Quick facts
Scientific name: Trioceros melleri
Common names: Meller’s Chameleon, Giant One-horned Chameleon
Family: Chamaeleonidae
Native distribution: South-eastern Africa
Lifestyle: Arboreal
Activity: Diurnal
Adult size: Commonly approximately 45–60 cm (18–24 in) total length; exceptionally large individuals may exceed this
Lifespan: Approximately 8–12+ years may be achievable with excellent captive care
Diet: Primarily live invertebrates
Day ambient temperature: Approximately 22–26°C (72–79°F)
Warm upper zone: Approximately 25–28°C (77–82°F)
Basking temperature: Approximately 28–31°C (82–88°F)
Cool area: Approximately 20–23°C (68–73°F)
Night temperature: Approximately 15–19°C (59–66°F)
Day humidity: Approximately 50–70%
Night humidity: Approximately 80–100% with excellent ventilation
UVB: Essential
Suggested basking UVI: Approximately 2–3
Adult enclosure: At least approximately 180 × 90 × 180 cm (6 × 3 × 6 ft); 240 × 120 × 200 cm (8 × 4 × 6½ ft) or larger strongly preferred
Housing: Individual housing safest
Reproduction: Egg-laying
Handling: Minimal
Experience level: Advanced
Taxonomy
The accepted scientific name is:
Trioceros melleri
The species belongs to:
Family: Chamaeleonidae
Genus: Trioceros
Older literature may refer to the species as:
Chamaeleo melleri**.**
Natural distribution
Meller’s Chameleon occurs naturally in parts of:
- Malawi
- Mozambique
- Tanzania
Its exact distribution is associated principally with south-eastern African woodland and forest environments.
Habitat
Natural habitats include:
- Moist woodland
- Savanna woodland
- Forest edge
- Riverine vegetation
- Agricultural areas containing mature trees
- Secondary woodland
Arboreal lifestyle
Meller’s Chameleons are strongly:
arboreal.
Adults spend much of their lives among:
- Trees
- Large shrubs
- Heavy branches
- Dense foliage
Why habitat structure matters
A large adult needs considerably more than one or two horizontal branches.
The enclosure should provide an interconnected:
three-dimensional arboreal network.
Adult size
Meller’s Chameleons are among the largest chameleons in mainland Africa.
Adults commonly reach approximately:
45–60 cm (18–24 in)
total length.
Body build
Adults are:
- Large-headed
- Deep-bodied
- Long-limbed
- Powerful climbers
Occipital lobes
One of the characteristic features of the species is the enlarged:
occipital lobes
behind the head.
Rostral horn
Adults possess a small:
rostral projection
on the snout.
This gives rise to the common name:
Giant One-horned Chameleon.
Sexual identification
Sexing Meller’s Chameleons can be considerably more difficult than sexing species with obvious external sexual characteristics.
Sexual dimorphism
Males and females can appear:
remarkably similar externally.
Body size alone should not be considered a reliable method of sex determination.
Colouration
Typical colours include:
- Green
- Yellow
- Black
- Brown
- Cream
Stress colouration
A stressed or defensive animal may develop striking:
- Black
- Yellow
- Green
contrasting patterns.
Colour and health
Colour alone should never be used to assess health.
Consider:
- Behaviour
- Appetite
- Hydration
- Weight
- Eye condition
- Grip strength
together.
Behaviour
Meller’s Chameleons are generally:
slow and deliberate.
Temperament
Some captive individuals become relatively calm around familiar keepers.
Others remain:
- Defensive
- Nervous
- Easily stressed
Handling
Routine handling should be:
minimal.
Voluntary movement
Whenever possible, allow the animal to:
walk voluntarily onto a branch or hand.
Never pull from branches
A large chameleon has an exceptionally powerful grip.
Pulling it from a branch can injure:
- Toes
- Feet
- Limbs
Defensive behaviour
A threatened animal may:
- Flatten its body
- Gap
- Hiss
- Display contrasting colour
- Attempt to bite
Bite
A large adult can deliver a:
powerful and painful bite.
Enclosure philosophy
The enclosure should function more like:
a small indoor tree habitat
than a conventional reptile cage.
Minimum adult enclosure
For one adult, provide at least approximately:
180 × 90 × 180 cm (6 × 3 × 6 ft).
Preferred enclosure
Approximately:
240 × 120 × 200 cm (8 × 4 × 6½ ft)
or larger is strongly preferred.
Walk-in housing
Large adults are excellent candidates for:
- Walk-in enclosures
- Dedicated reptile-room habitats
- Large custom-built planted enclosures
Why width matters
A tall but narrow cage restricts:
- Horizontal movement
- Thermal choice
- Exposure choice
- Natural behavioural movement
Enclosure type
Suitable designs include:
- Large screen enclosures
- Hybrid screen/PVC enclosures
- Custom ventilated vivaria
- Walk-in planted enclosures
Ireland and UK
Fully screened housing can make temperature and humidity management difficult during colder Irish and UK weather.
A hybrid enclosure often provides better environmental control while retaining:
strong ventilation.
Ventilation
Excellent air exchange is:
essential.
Humidity does not mean stagnant air
Meller’s Chameleons benefit from high nighttime humidity, but this must occur alongside:
fresh moving air.
Furnishings
Provide substantial:
- Natural branches
- Vines
- Live plants
- Horizontal pathways
- Diagonal pathways
Branch strength
Branches must safely support:
the full weight of a large adult.
Branch diameter
Provide several diameters.
The feet should not remain permanently wrapped around branches of identical thickness.
Branch network
Create interconnected routes between:
- Basking areas
- UVB exposure
- Dense foliage
- Cooler areas
- Drinking locations
Basking branch
Provide a strong, stable branch beneath:
- Heat
- UVB
Foliage
Dense foliage is extremely important.
Visual security
The chameleon should be able to move completely out of:
direct keeper view.
Live plants
Suitable robust plants may include:
- Ficus
- Schefflera
- Pothos
- Hibiscus
provided they are:
- Non-toxic
- Pesticide-free
- Strong enough for the enclosure
Plant preparation
Plants should be thoroughly cleaned before introduction.
Remove or replace potentially contaminated:
- Compost
- Fertiliser
- Pesticide residues
Drainage
Meller’s Chameleons require substantial hydration, making:
effective drainage essential.
Drainage options
Large enclosures may use:
- Drainage trays
- Bulkhead drains
- Plumbed drainage systems
Standing water
Do not allow significant standing water to remain on the enclosure floor.
Temperature
Meller’s Chameleons should not be maintained excessively hot.
Day ambient temperature
Maintain most of the enclosure around:
22–26°C (72–79°F).
Warm upper zone
The upper enclosure can reach approximately:
25–28°C (77–82°F).
Basking temperature
Provide a moderate basking area around:
28–31°C (82–88°F).
Avoid excessive basking temperatures
Temperatures around:
35–40°C (95–104°F)
are unnecessarily high for this species.
Cool area
Provide substantial shaded areas around:
20–23°C (68–73°F).
Thermal gradient
The animal must be able to move freely between:
- Basking heat
- Moderate warmth
- Cool foliage
Night temperature
Allow temperatures to fall toward approximately:
15–19°C (59–66°F).
Night cooling
A substantial nighttime temperature drop is:
highly beneficial.
Avoid warm nights
Keeping the enclosure at approximately:
24–26°C (75–79°F) throughout the night
is inappropriate.
Heatwaves
Meller’s Chameleons can be vulnerable to prolonged summer overheating.
Warning conditions
Persistent temperatures above approximately:
28–30°C (82–86°F)
without access to cooler areas should be addressed.
Cooling strategies
During warm weather:
- Increase room ventilation
- Use air conditioning where necessary
- Reduce unnecessary heat sources
- Maintain shaded areas
- Adjust misting appropriately
Heating
Use:
overhead heat.
Basking lamp
A broad halogen flood is suitable.
Large adult basking
A large adult may benefit from:
two overlapping low-powered flood lamps
rather than one extremely intense bulb.
Why
This produces a broader warm area across the animal’s body and reduces:
localised overheating.
Thermostat
Use appropriate safety control.
Temperature monitoring
Monitor temperatures at:
- Basking branch
- Upper ambient level
- Mid-level
- Lower shaded level
UVB
UVB is essential for healthy:
- Calcium metabolism
- Skeletal maintenance
- Muscle function
Suggested UVI
Provide approximately:
UVI 2–3
at the principal exposed basking position.
UV gradient
The enclosure should also contain:
- UVI 1–2 in partially shaded areas
- UVI below 1 through dense foliage
- Near-zero UV retreats
What this means in practice
Use a quality:
linear T5 UVB lamp
positioned above the principal climbing and basking area.
Lamp strength
The appropriate lamp depends upon:
- Distance from animal
- Reflector
- Mesh
- Lamp model
- Enclosure construction
Do not rely on percentage alone
A lamp labelled:
6%, 7%, 10% or 12%
does not automatically tell you how much UV reaches the animal.
Mesh effect
Mesh can substantially reduce delivered UVB.
UV meter
Where possible, measure the actual UVI at the basking branch with:
a suitable UV meter.
Shade
A chameleon must always be able to leave direct UV exposure.
Visible-spectrum lighting
Provide bright daylight-spectrum illumination.
Why bright lighting matters
Chameleons rely heavily on vision for:
- Hunting
- Navigation
- Social behaviour
- Circadian regulation
Plant lighting
High-quality daylight LED lighting can be useful alongside:
- UVB
- Basking heat
Photoperiod
Approximately:
11–13 hours
of daylight can be provided depending on season.
Night lighting
Provide:
complete darkness.
Do not use permanent:
- Red bulbs
- Blue bulbs
- Purple bulbs
at night.
Humidity
Meller’s Chameleons benefit from:
pronounced day/night humidity cycling.
Day humidity
Allow daytime humidity to fall toward approximately:
50–70%.
Night humidity
Humidity can rise toward:
80–100%.
Why nighttime humidity works
High humidity is safest when combined with:
- Cooler temperatures
- Strong ventilation
Drying period
Foliage should partially dry during the day.
Constant wetness
Avoid keeping every surface permanently wet.
Hydration
Meller’s Chameleons require:
excellent hydration.
This is particularly important for recently acquired or historically wild-caught animals.
Misting
Provide substantial misting:
once or twice daily
as a starting point.
Morning misting
A longer morning session is particularly useful.
It allows time for the animal to:
- Begin drinking
- Clean its eyes
- Rehydrate
Evening misting
Evening misting can help create:
cool, humid nighttime conditions.
Automatic misting
A reliable automatic misting system is highly useful for this species.
Dripper
A slow daytime dripper can provide additional drinking opportunities.
Drinking behaviour
Some individuals may drink for:
several minutes at a time.
Brief spraying may therefore be inadequate.
Water bowl
Do not rely on a conventional water bowl as the primary drinking source.
Hydration monitoring
Assess:
- Eye fullness
- Urate colour
- Body weight
- Activity
- Skin condition
Urates
Well-hydrated urates should generally be predominantly:
white.
Persistent orange urates
Strongly orange, dry urates may indicate:
dehydration.
Diet
Meller’s Chameleons are primarily:
insectivorous.
Natural prey
Wild diets include:
- Grasshoppers
- Crickets
- Beetles
- Roaches
- Caterpillars
- Other arthropods
Large individuals may occasionally consume small vertebrate prey opportunistically.
Captive diet
A broad range of live invertebrates should form:
the foundation of the diet.
Staple feeders
Suitable feeders include:
- Locusts
- Crickets
- Appropriate roaches
- Silkworms
- Black soldier fly larvae
Additional variety
Offer:
- Moths
- Flies
- Hornworms
- Stick insects where safely cultured
- Appropriate beetle larvae
- Captive-produced snails
Prey size
Large adults can consume substantial prey, but prey should remain:
appropriately sized.
Vertebrate prey
Routine feeding of:
- Mice
- Lizards
- Other vertebrates
is unnecessary.
Adult feeding
Healthy adults generally do well when fed approximately:
3–4 times weekly.
Juvenile feeding
Growing juveniles should receive appropriately sized food:
daily or almost daily.
Body condition
Large body size should not be confused with:
obesity.
Weight monitoring
Regular weighing is strongly recommended.
Gut loading
Conventional feeder insects should be:
properly gut loaded.
Calcium
Dust feeders appropriately with:
calcium.
Multivitamin
Use an appropriate reptile multivitamin:
conservatively.
Vitamin D3
Dietary D3 should be balanced against:
actual UVB exposure.
Over-supplementation
Excessive supplementation can cause significant health problems.
Social housing
Individual housing is:
the safest recommendation.
Social behaviour
Meller’s Chameleons have sometimes been maintained in large communal environments.
This does not mean ordinary group housing is safe.
Why group housing is difficult
Chameleon social stress can be extremely subtle.
A subordinate animal may:
- Eat less
- Remain hidden
- Avoid basking
- Lose weight
without obvious fighting.
Adult males
Do not routinely house multiple adult males together.
Pair housing
Permanent male/female pair housing is not recommended for ordinary captive management.
Visual contact
Even animals in separate enclosures may react negatively to constant visual contact.
Visual barriers
Use:
- Dense plants
- Solid partitions
where necessary.
Reproduction
Meller’s Chameleons are:
oviparous — egg-laying.
Breeding difficulty
Captive reproduction has historically been considerably less common than in species such as:
- Veiled Chameleons
- Panther Chameleons
Why breeding is challenging
Challenges include:
- Difficult sex determination
- Large adult space requirements
- Subtle reproductive behaviour
- Female nutritional demands
- Large nesting requirements
- Long incubation
Breeding condition
Animals should only be bred when:
- Fully mature
- Properly hydrated
- In excellent body condition
- Free from significant disease
Courtship
Breeding behaviour may involve:
- Male approach
- Colour change
- Slow following
- Head movements
Female rejection
A non-receptive female may:
- Display strongly
- Gap
- Move away
- Become defensive
Separation
Separate animals where there is:
- Persistent pursuit
- Biting
- Obvious stress
Gravid female
Possible signs include:
- Increased abdominal fullness
- Increased weight
- Reduced receptivity
- Ground exploration
- Digging
Nesting
Females require substantial nesting provision.
Nesting depth
Provide at least approximately:
40–50 cm (16–20 in)
of suitable digging substrate.
Preferred depth
A large female may benefit from:
50–60 cm (20–24 in).
Nesting area
The laying container must be large enough for the female to:
- Enter completely
- Turn comfortably
- Excavate a full tunnel
Nesting substrate
A suitable mixture can contain:
- Organic topsoil
- Sand
Correct consistency
The substrate should be moist enough to:
hold a tunnel
without being waterlogged.
Privacy
A nesting female should be provided:
maximum privacy.
Disturbance
Repeatedly disturbing a digging female may cause her to abandon:
otherwise suitable nest sites.
Clutch size
Meller’s Chameleons can produce large clutches.
Approximately:
30–60 eggs
may occur.
Clutch size varies with:
- Female size
- Age
- Condition
Reproductive demand
Producing a large clutch places considerable demands on:
- Calcium
- Hydration
- Energy reserves
Post-laying care
After laying, provide:
- Thorough hydration
- Appropriate feeding
- Calcium
- Minimal disturbance
Egg handling
If eggs are removed:
- Maintain orientation
- Handle gently
- Avoid unnecessary rotation
Incubation
Incubation is relatively lengthy.
Incubation temperature
A practical working range is approximately:
21–24°C (70–75°F).
Avoid high incubation temperatures
Do not incubate constantly at very warm temperatures simply to:
accelerate development.
Incubation duration
Eggs may require approximately:
9–12 months
to hatch, with substantial variation possible.
Incubation moisture
Maintain incubation medium:
moist but not saturated.
Hatchlings
Hatchlings require careful management.
Hatchling enclosure
Provide:
- Fine branches
- Dense foliage
- Excellent ventilation
- Gentle heat
- UVB
- Frequent hydration
Hatchling temperature
Maintain daytime ambient temperatures around:
21–24°C (70–75°F).
Hatchling warm area
Provide approximately:
25–27°C (77–81°F).
Hatchling night temperature
Allow cooling toward:
16–19°C (61–66°F).
Hatchling UVB
Provide approximately:
UVI 1–2
at exposed upper perches.
Hatchling humidity
Maintain:
- Moderate daytime humidity
- High nighttime humidity
- Excellent ventilation
Hatchling diet
Offer:
- Pinhead crickets
- Tiny roach nymphs
- Flightless fruit flies
- Small black soldier fly larvae
- Other appropriately sized invertebrates
Hatchling feeding
Feed:
daily.
Hatchling supplementation
Provide:
- Properly gut-loaded prey
- Light calcium supplementation
- Conservative multivitamin use
- Appropriate UVB
Quarantine
Quarantine is particularly important for this species.
Minimum quarantine
At least:
90 days
is recommended.
Longer quarantine may be appropriate for wild-origin animals.
Historical wild-caught trade
Meller’s Chameleons have historically been exported from Africa in significant numbers.
Common import problems
Wild-caught animals may arrive with:
- Severe dehydration
- Parasites
- Weight loss
- Injuries
- Rostral damage
- Foot damage
- Respiratory problems
- Chronic stress
Captive-bred preference
Documented captive-bred animals should be:
strongly preferred.
Veterinary assessment
Wild-origin or uncertain animals should ideally receive:
- Full physical examination
- Faecal parasite testing
- Accurate body-weight measurement
Parasites
Potential parasites include:
- Gastrointestinal nematodes
- Protozoa
- Other internal parasites
Do not treat blindly
Antiparasitic medication should not be administered simply because an animal is wild caught.
Diagnosis and dosage should be guided by:
a suitably experienced veterinarian.
Common health concerns
Potential health problems include:
- Dehydration
- Chronic overheating
- Metabolic bone disease
- Parasites
- Respiratory disease
- Eye disease
- Burns
- Obesity
- Foot injuries
- Reproductive complications
Dehydration
This is particularly common in newly imported animals.
Signs may include:
- Sunken eyes
- Dry orange urates
- Lethargy
- Poor appetite
- Weight loss
Metabolic bone disease
Possible signs include:
- Weak grip
- Tremors
- Bent limbs
- Soft jaw
- Fractures
MBD prevention
Provide:
- Correct UVB
- Appropriate calcium
- Gut-loaded prey
- Suitable temperatures
Respiratory disease
Risk increases with:
- Poor ventilation
- Persistently wet conditions
- Incorrect temperatures
Respiratory signs
Watch for:
- Wheezing
- Clicking
- Nasal discharge
- Excess mucus
- Abnormal open-mouth breathing
Eye health
Healthy eyes should remain:
- Full
- Open
- Mobile
during daylight.
Daytime eye closure
Persistent daytime eye closure is:
a significant health warning.
Burns
Prevent access to:
- Heat lamps
- Heating elements
- Hot fixtures
Foot health
Large adults place substantial loads on their feet.
Provide varied branch diameters and monitor for:
- Swelling
- Sores
- Damaged claws
- Abnormal grip
Reproductive disease
Females may experience:
- Egg retention
- Dystocia
- Calcium depletion
- Follicular disease
Veterinary red flags
Seek specialist veterinary attention for:
- Persistent anorexia
- Significant weight loss
- Severe dehydration
- Weak grip
- Tremors
- Persistent daytime eye closure
- Abnormal breathing
- Serious injury
- Suspected egg retention
Cleaning
Remove promptly:
- Faeces
- Dead prey
- Spoiled food
- Rotting plant material
Drainage maintenance
Regularly inspect drainage for:
- Blockages
- Standing water
- Waterlogged substrate
Avoid excessive sterilisation
A mature planted enclosure does not need to be repeatedly stripped down when routine hygiene is maintained.
Seasonal husbandry
Wild Meller’s Chameleons experience seasonal changes in:
- Rainfall
- Temperature
- Humidity
- Food availability
Wet season
During wetter periods:
- Increase misting moderately
- Increase prey availability where appropriate
- Maintain excellent ventilation
Drier season
During drier periods:
- Reduce misting somewhat
- Maintain reliable drinking opportunities
- Allow stronger daytime drying
Night cooling
Nighttime cooling should remain an important part of husbandry throughout the year.
Brumation
Meller’s Chameleons do not undergo:
temperate-style brumation.
Conservation and responsible sourcing
Wild populations are affected by pressures including:
- Habitat alteration
- Agricultural development
- Collection for trade
CITES
Meller’s Chameleon is regulated under:
CITES Appendix II.
What Appendix II means
International commercial trade may occur, but it is controlled through:
- CITES documentation
- National wildlife legislation
- Export and import requirements
International movement
Always check current requirements before moving an animal between countries.
Ireland and Northern Ireland
Requirements can differ between:
- Republic of Ireland
- Northern Ireland
- Great Britain
- Other EU jurisdictions
particularly where:
- CITES
- Commercial movement
- Import/export rules
are involved.
Provenance
Keep permanent records including:
- Scientific name
- Breeder or supplier
- Purchase documentation
- Hatch date where known
- Parentage where known
- CITES documentation
- Import/export records where applicable
Never release captive animals
Never release a captive Meller’s Chameleon into the wild.
Common husbandry mistakes
Common mistakes include:
- Underestimating adult size
- Using a standard small chameleon cage
- Providing insufficient horizontal space
- Providing weak branches
- Providing sparse foliage
- Keeping the enclosure too hot
- Using excessively hot basking temperatures
- Failing to provide nighttime cooling
- Maintaining warm dry nights
- Providing inadequate drinking opportunities
- Using misting sessions that are too short
- Keeping the enclosure permanently wet
- Providing poor ventilation
- Providing insufficient UVB
- Providing excessive UVB without shade
- Feeding only one insect species
- Routine vertebrate feeding
- Overfeeding adults
- Keeping multiple animals together without specialist facilities
- Ignoring subtle social stress
- Providing females with inadequate nesting depth
- Failing to quarantine
- Failing to screen wild-origin animals for parasites
- Treating parasites without veterinary guidance
- Purchasing poorly established wild-caught specimens when captive-bred animals are available
Responsible ownership
Before obtaining a Meller’s Chameleon, ensure you can provide:
- Legally documented provenance
- At least approximately 180 × 90 × 180 cm (6 × 3 × 6 ft) adult accommodation
- Preferably 240 × 120 × 200 cm (8 × 4 × 6½ ft) or larger
- Strong interconnected branches
- Dense live foliage
- Excellent ventilation
- Effective drainage
- Day temperatures around 22–26°C (72–79°F)
- Basking around 28–31°C (82–88°F)
- Cool shaded areas around 20–23°C (68–73°F)
- Night temperatures around 15–19°C (59–66°F)
- Day humidity around 50–70%
- High nighttime humidity
- Long misting sessions
- Reliable drinking opportunities
- Strong visible-spectrum lighting
- Appropriate UVB
- UVI approximately 2–3 at the main exposed basking position
- Extensive shade
- A varied live-invertebrate diet
- Proper gut loading
- Appropriate supplementation
- Individual housing
- Deep nesting provision for mature females
- Regular weight monitoring
- Quarantine facilities
- Access to a chameleon-experienced veterinarian
Summary
Meller’s Chameleon (Trioceros melleri) is one of Africa’s largest chameleons and requires substantially more space and environmental control than commonly kept smaller species.
Adults commonly reach approximately:
45–60 cm (18–24 in)
total length.
For one adult, provide at least approximately:
180 × 90 × 180 cm (6 × 3 × 6 ft),
with:
240 × 120 × 200 cm (8 × 4 × 6½ ft)
or larger strongly preferred.
Maintain daytime temperatures around:
22–26°C (72–79°F)
with a gentle basking area around:
28–31°C (82–88°F).
Provide cooler shaded areas around:
20–23°C (68–73°F)
and allow nighttime temperatures to fall toward:
15–19°C (59–66°F).
Maintain daytime humidity around:
50–70%
with nighttime humidity rising toward:
80–100%
while maintaining excellent ventilation.
Provide appropriate UVB producing approximately:
UVI 2–3
at the main exposed basking position, together with extensive shaded retreats.
Hydration is particularly important. Use substantial misting sessions and, where useful, a dripper rather than relying on brief spraying.
Feed a varied live-invertebrate diet based around:
- Locusts
- Crickets
- Roaches
- Silkworms
- Black soldier fly larvae
- Flies
- Moths
- Other suitable invertebrates
with proper gut loading and conservative supplementation.
Individual housing is the safest approach.
Females require substantial nesting areas, and breeding is an advanced undertaking due to difficult sex determination, large clutch sizes and lengthy incubation.
Meller’s Chameleons are regulated under:
CITES Appendix II.
Documented captive-bred animals should be strongly preferred over wild-caught imports.
With exceptionally spacious housing, moderate temperatures, cool nights, strong hydration, measured UVB and careful nutrition, Trioceros melleri can be an extraordinary long-term species for experienced chameleon keepers.
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: September 2026