Usambara Three-Horned Chameleon (Trioceros deremensis) Care Sheet
The Usambara Three-Horned Chameleon (Trioceros deremensis), also known as the Deremensis Chameleon, is a spectacular montane chameleon endemic to Tanzania’s Eastern Arc Mountains.
Adult males develop three prominent horns together with a high dorsal crest, giving the species a striking prehistoric appearance. Females lack the prominent horns but are equally specialised in their environmental requirements.
This is a cool, humid mountain-forest species. It should not be maintained using the hotter conditions commonly associated with Veiled or Panther Chameleons.
Its natural environment is characterised by:
- Cool montane forest
- Dense vegetation
- Frequent mist and cloud
- Moderate daytime temperatures
- Cool nights
- High nighttime humidity
- Strong airflow
- Filtered sunlight
The most important husbandry principles are:
moderate days, genuinely cool nights, high nighttime humidity and excellent ventilation.
Chronic overheating is one of the greatest risks in captivity, particularly during warm summer weather.
Successful long-term husbandry requires:
- A spacious, vertically orientated enclosure
- Dense live planting
- Numerous interconnected branches
- Excellent ventilation
- Moderate daytime temperatures
- Strong nighttime cooling
- High nighttime humidity
- Reliable hydration
- Appropriate UVB
- Bright visible-spectrum lighting
- A varied live-invertebrate diet
- Conservative supplementation
- Individual housing
- Minimal unnecessary handling
This species is best considered:
advanced montane chameleon husbandry.
Quick facts
Scientific name: Trioceros deremensis
Common names: Usambara Three-Horned Chameleon, Deremensis Chameleon, Warty Three-Horned Chameleon
Family: Chamaeleonidae
Native distribution: Tanzania
Natural range: Eastern Arc Mountains, particularly the Usambara Mountains
Lifestyle: Arboreal
Activity: Diurnal
Adult size: Approximately 25–35 cm (10–14 in) total length
Diet: Primarily live invertebrates
Day ambient temperature: Approximately 20–24°C (68–75°F)
Warm upper zone: Approximately 23–25°C (73–77°F)
Basking temperature: Approximately 25–28°C (77–82°F)
Cool area: Approximately 18–21°C (64–70°F)
Night temperature: Approximately 12–17°C (54–63°F)
Day humidity: Approximately 60–75%
Night humidity: Approximately 85–100% with excellent ventilation
UVB: Essential
Suggested basking UVI: Approximately 1.5–2.5
Adult enclosure: At least approximately 60 × 60 × 120 cm (2 × 2 × 4 ft); 90 × 60 × 120 cm (3 × 2 × 4 ft) or larger preferred
Housing: Individual housing strongly recommended
Reproduction: Egg-laying
Handling: Minimal
Experience level: Advanced
Taxonomy
The accepted scientific name is:
Trioceros deremensis
It belongs to:
Family: Chamaeleonidae
Genus: Trioceros
Older literature may list the species as:
Chamaeleo deremensis**.**
Endemic species
Trioceros deremensis is endemic to:
Tanzania.
This means it occurs naturally nowhere else in the world.
Natural distribution
The species is associated principally with Tanzania’s:
Eastern Arc Mountains.
It is particularly associated with the:
Usambara Mountains.
Eastern Arc Mountains
The Eastern Arc is an ancient chain of isolated mountains with exceptionally high:
- Biodiversity
- Endemism
- Ecological importance
Natural habitat
Usambara Three-Horned Chameleons inhabit:
- Montane rainforest
- Cloud forest
- Forest edge
- Dense highland vegetation
- Shaded agricultural vegetation adjoining suitable forest
Elevation
Populations occur at substantial elevations where temperatures are significantly cooler than in surrounding lowlands.
Why elevation matters
Mountain habitats expose these chameleons to:
- Mild days
- Cool nights
- Frequent cloud
- High humidity
- Mist
- Considerable daily temperature variation
Captive conditions should reflect these environmental patterns.
Arboreal lifestyle
Trioceros deremensis is strongly:
arboreal.
It spends most of its time among:
- Branches
- Shrubs
- Small trees
- Dense foliage
Adult size
Adults generally reach approximately:
25–35 cm (10–14 in)
total length.
Male appearance
Adult males are particularly distinctive.
They develop:
- Three prominent facial horns
- Large casque
- Strong dorsal crest
- Deep body
- Granular scales
Horn arrangement
Adult males generally possess:
- One central rostral horn
- Two preocular horns
Female appearance
Females normally lack the prominent three-horn arrangement of mature males.
They generally have:
- Reduced cranial ornamentation
- Smaller adult size
- Less exaggerated cresting
Sexual dimorphism
Adult males are therefore considerably easier to identify than juveniles.
Colouration
Typical colours include:
- Green
- Olive
- Yellow-green
- Brownish green
Pattern
Individuals may display:
- Pale markings
- Darker patches
- Subtle banding
depending on:
- Mood
- Temperature
- Reproductive condition
Behaviour
Usambara Three-Horned Chameleons are generally:
slow, deliberate and relatively secretive.
Temperament
Some individuals become tolerant of routine keeper activity.
However, they remain animals that should primarily be:
observed rather than handled.
Handling
Keep handling:
minimal.
Stress
Excessive handling may contribute to:
- Dark colouration
- Reduced feeding
- Hiding
- Chronic physiological stress
Voluntary movement
When an animal must be moved, encourage it to:
walk voluntarily onto a branch or hand.
Never pull from branches
A chameleon’s feet are highly specialised for gripping.
Pulling an animal from a branch can damage:
- Toes
- Feet
- Limbs
Defensive behaviour
A threatened individual may:
- Flatten its body
- Gap
- Hiss
- Change colour
- Attempt to bite
Enclosure philosophy
The enclosure should resemble:
a cool, densely vegetated section of montane forest.
Minimum adult enclosure
For one adult, provide at least approximately:
60 × 60 × 120 cm (2 × 2 × 4 ft).
Preferred adult enclosure
Approximately:
90 × 60 × 120 cm (3 × 2 × 4 ft)
or larger is preferred.
Large males
Large adult males benefit from approximately:
90 × 60 × 150 cm (3 × 2 × 5 ft)
or larger.
Why larger is better
Additional space allows:
- More climbing routes
- Better temperature gradients
- More shaded retreats
- Greater UVB choice
- Better behavioural opportunities
Enclosure type
Suitable enclosure designs include:
- Screen enclosures
- Hybrid screen/PVC enclosures
- Highly ventilated glass enclosures
- Custom planted vivaria
Ireland and UK
In Ireland and the UK, fully screened cages may make humidity management difficult during:
- Winter
- Centrally heated indoor conditions
Hybrid enclosures can provide a useful balance between:
humidity retention and ventilation.
Ventilation
Excellent ventilation is essential.
Humidity versus airflow
High humidity must never mean:
stagnant air.
The goal is:
cool, humid, fresh moving air.
Furnishings
Provide numerous:
- Natural branches
- Fine branches
- Medium branches
- Vines
- Live plants
- Horizontal pathways
- Diagonal pathways
Branch network
Branches should form a continuous three-dimensional network.
The animal should not need to climb enclosure walls simply to move between important resources.
Branch diameter
Use several diameters to promote healthy:
- Grip
- Feet
- Limb movement
Basking branch
Provide a stable branch beneath:
- Basking heat
- UVB
Foliage
Dense foliage is:
essential.
Visual security
The animal should be able to retreat completely from:
- Direct light
- Keeper view
- Other animals
Live plants
Suitable plants may include:
- Ficus
- Schefflera
- Pothos
- Ferns
- Other safe montane-style plants
Plant safety
Plants must be:
- Non-toxic
- Pesticide-free
- Thoroughly washed
Drainage
Regular misting means effective drainage is essential.
Standing water
Do not allow the enclosure floor to remain:
waterlogged.
Temperature
Correct temperature management is critical.
This species should not be maintained:
hot.
Day ambient temperature
Maintain most of the enclosure around:
20–24°C (68–75°F).
Warm upper zone
The upper enclosure may reach approximately:
23–25°C (73–77°F).
Basking temperature
Provide a gentle basking area around:
25–28°C (77–82°F).
Avoid excessive basking heat
Routine basking temperatures around:
30–35°C (86–95°F)
are inappropriate.
Cool area
Provide shaded areas around:
18–21°C (64–70°F).
Thermal gradient
The animal should always be able to move between:
- Gentle basking warmth
- Moderate ambient conditions
- Cool shaded foliage
Night temperature
Allow nighttime temperatures to fall toward:
12–17°C (54–63°F).
Night cooling
A pronounced nighttime temperature reduction is:
fundamental to good husbandry.
Why cool nights matter
Montane chameleons have evolved in environments where temperatures drop substantially after sunset.
Night cooling supports:
- Normal metabolic rhythm
- Hydration
- Recovery from daytime warmth
- Natural behaviour
Warm nights
Repeated nights above approximately:
19–20°C (66–68°F)
should be avoided where possible.
Heatwaves
Summer heatwaves can present a serious challenge.
Heat stress
Prolonged exposure to high temperatures can cause:
- Persistent gaping
- Restlessness
- Reduced appetite
- Dehydration
- Weakness
- Collapse
Heatwave planning
Keepers should have a plan for unusually warm weather before acquiring this species.
Possible measures include:
- Air conditioning
- Cooler dedicated reptile room
- Increased room ventilation
- Reduced unnecessary heat-producing equipment
- Switching basking lamps off when ambient temperatures are already high
Do not directly chill the animal
Avoid:
- Ice packs inside the enclosure
- Frozen bottles against branches
- Strong cold draughts
Cooling should occur through:
controlled environmental temperature reduction.
Heating
Use gentle:
overhead radiant heat.
Basking lamp
A low-powered halogen flood is usually sufficient.
Seasonal heating
In some homes, additional basking heat may only be necessary during:
cooler periods.
Thermostat
Use suitable control to prevent accidental overheating.
Temperature monitoring
Measure:
- Basking perch
- Upper enclosure
- Lower shaded area
- Night minimum
UVB
UVB is essential for:
- Vitamin D3 synthesis
- Calcium metabolism
- Skeletal health
- Muscle function
Suggested UVI
Provide approximately:
UVI 1.5–2.5
at the main exposed basking position.
UV gradient
Also provide:
- UVI around 1 in partially shaded areas
- UVI below 1 through foliage
- Near-zero UV retreats
What this means in practice
Use a quality:
linear T5 UVB lamp
over part of the upper enclosure.
UVB lamp strength
The correct lamp depends on:
- Distance
- Reflector
- Mesh
- Lamp model
- Enclosure design
Mesh effect
Screen mesh can significantly reduce UV reaching the animal.
UV meter
Where possible, use a suitable UV meter to measure:
actual UVI at the basking branch.
Do not flood the entire enclosure with UVB
The chameleon must be able to choose:
- Direct UV exposure
- Partial exposure
- Complete shade
Visible-spectrum lighting
Provide bright daylight-spectrum illumination.
Why bright lighting matters
Chameleons depend heavily upon vision for:
- Hunting
- Navigation
- Behaviour
- Circadian regulation
Plant lighting
Daylight LEDs can be useful for supporting:
- Live plants
- Overall enclosure brightness
Photoperiod
Approximately:
11–12 hours
of daylight is suitable as a general baseline.
Seasonal photoperiod
Minor seasonal changes can be used where appropriate.
Night lighting
Provide:
complete darkness.
Do not use permanent:
- Red bulbs
- Blue bulbs
- Purple bulbs
at night.
Humidity
Usambara Three-Horned Chameleons require relatively high humidity, particularly overnight.
Day humidity
Maintain approximately:
60–75%.
Night humidity
Humidity can rise toward:
85–100%.
Cool humid nights
High nighttime humidity should occur alongside:
low nighttime temperatures.
Daytime drying
Allow exposed foliage and branches to:
partially dry during the day.
Why drying matters
Constantly saturated warm conditions can encourage:
- Bacterial growth
- Fungal growth
- Respiratory disease
- Skin problems
Ventilation
Maintain excellent airflow throughout the humidity cycle.
Misting
Provide substantial misting:
once or twice daily
as a starting point.
Actual frequency should depend on:
- Enclosure ventilation
- Room humidity
- Season
- Drying rate
Morning misting
Morning misting provides an important opportunity for:
- Drinking
- Eye cleaning
- Rehydration
Evening misting
Evening misting helps create:
cool humid nighttime conditions.
Fogging
A cool-mist fogger can be useful during the night.
Fogging conditions
Fogging is most appropriate when:
- Temperatures are cool
- Ventilation is excellent
Avoid warm daytime fogging
Do not create warm stagnant fog during daylight hours.
Dripper
A slow daytime dripper may provide additional drinking opportunities.
Water bowl
Do not rely on a conventional water bowl as the primary drinking source.
Drinking behaviour
Chameleons generally drink:
moving droplets from foliage and branches.
Hydration monitoring
Monitor:
- Eye fullness
- Urate colour
- Body weight
- Activity
Healthy urates
Urates should usually be predominantly:
white.
Persistent orange urates
Repeated orange or very dry urates may indicate:
inadequate hydration.
Diet
Trioceros deremensis is primarily:
insectivorous.
Natural prey
Wild prey includes a wide variety of:
- Flies
- Beetles
- Grasshoppers
- Crickets
- Caterpillars
- Spiders
- Other arthropods
Captive staple feeders
Suitable feeders include:
- Crickets
- Small locusts
- Appropriate roaches
- Silkworms
- Black soldier fly larvae
Additional variety
Offer:
- Flies
- Moths
- Bean beetles
- Hornworms
- Appropriate stick insects
- Other safe cultured invertebrates
Dietary diversity
Do not rely on:
one feeder species.
Prey size
Feed prey small enough to be swallowed comfortably.
Adult feeding
Healthy adults generally do well when fed approximately:
3–4 times weekly.
Juvenile feeding
Growing juveniles should receive appropriately sized prey:
daily or almost daily.
Female nutrition
Breeding females require adequate nutrition but should not be chronically:
overfed.
Gut loading
Conventional feeder insects should be:
properly gut loaded.
Calcium
Dust feeders lightly with:
plain calcium
on an appropriate schedule.
Multivitamin
Use a suitable reptile multivitamin:
conservatively.
Vitamin D3
Supplemental D3 should be used cautiously where effective UVB is available.
Over-supplementation
Montane chameleons may be vulnerable to excessive supplementation.
Avoid heavy schedules simply copied from:
Veiled Chameleon husbandry.
Body condition
Healthy adults should remain:
- Lean
- Muscular
- Well hydrated
Weight monitoring
Regular weighing is useful for identifying subtle:
- Weight loss
- Weight gain
- Reproductive changes
Social housing
Adults should normally be:
housed individually.
Male territorial behaviour
Adult males can become strongly territorial toward other males.
Females
Females can also experience chronic social stress.
Pair housing
Permanent male/female pair housing is not recommended.
Visual contact
Constant sight of another chameleon may result in:
- Persistent displaying
- Hiding
- Reduced feeding
- Chronic stress
Visual barriers
Use:
- Dense foliage
- Solid dividers
where necessary.
Breeding introductions
Introduce adults specifically for:
breeding.
Courtship
A male may:
- Approach slowly
- Display
- Change colour
- Perform head movements
Female rejection
A non-receptive female may:
- Darken
- Gap
- Attempt to escape
- Become defensive
Separation
Separate the pair if there is:
- Persistent chasing
- Biting
- Obvious distress
Reproduction
Usambara Three-Horned Chameleons are:
oviparous — egg-laying.
Breeding condition
Females should only be deliberately bred when:
- Fully mature
- Properly grown
- Well hydrated
- In excellent physical condition
Gravid female
Signs may include:
- Increased body mass
- Abdominal fullness
- Reduced receptivity
- Ground exploration
- Digging behaviour
Mature females and nesting provision
Mature females should have access to suitable laying substrate when reproductive activity is possible.
Laying container
Provide approximately:
25–30 cm (10–12 in)
of suitable substrate as a minimum.
Preferred depth
Approximately:
30–40 cm (12–16 in)
provides greater choice.
Nesting substrate
A suitable mixture can include:
- Organic topsoil
- Sand
Correct moisture
The substrate should be moist enough to:
hold a tunnel without collapsing
but not waterlogged.
Privacy
A digging female requires:
privacy.
Disturbance
Repeated disturbance can cause:
- Nest abandonment
- Delayed laying
- Increased reproductive risk
Clutch size
A practical general range is approximately:
10–20 eggs.
Individual clutches may fall outside this range.
Reproductive cost
Egg production requires substantial:
- Calcium
- Energy
- Hydration
Post-laying care
After laying:
- Rehydrate thoroughly
- Provide appropriate food
- Provide calcium
- Minimise unnecessary disturbance
Egg handling
If eggs are removed:
- Maintain their orientation
- Avoid unnecessary rotation
- Handle gently
Incubation
As a montane species, eggs should not be incubated using the high temperatures sometimes used for warm-climate chameleons.
Incubation temperature
A practical working range is approximately:
18–22°C (64–72°F).
Seasonal temperature variation
Some degree of cooler seasonal incubation may be beneficial.
Avoid excessive incubation heat
Do not incubate continuously at:
26–28°C (79–82°F)
simply to accelerate development.
Incubation medium
Suitable media include:
- Vermiculite
- Perlite
kept moist but not saturated.
Incubation duration
Incubation may take approximately:
7–10 months,
with variation according to temperature and clutch.
Hatchlings
Hatchlings require:
- Cool temperatures
- Excellent ventilation
- High nighttime humidity
- Frequent hydration
- Gentle UVB
- Tiny live prey
Hatchling enclosure
Provide numerous:
- Fine branches
- Small plants
- Visual barriers
Hatchling temperature
Maintain daytime temperatures around:
19–22°C (66–72°F).
Hatchling warm area
Provide approximately:
22–24°C (72–75°F).
Hatchling night temperature
Allow nighttime temperatures to fall toward:
12–16°C (54–61°F).
Hatchling UVB
Provide approximately:
UVI 1–1.5
at exposed upper branches.
Hatchling humidity
Maintain:
- Moderate-to-high daytime humidity
- Very high cool nighttime humidity
- Excellent airflow
Hatchling diet
Offer:
- Flightless fruit flies
- Pinhead crickets
- Tiny roach nymphs
- Bean beetles
- Other appropriately sized cultured prey
Hatchling feeding
Feed:
daily.
Hatchling supplementation
Supplement:
lightly and conservatively.
Quarantine
All newly acquired animals should undergo quarantine.
At least:
90 days
is recommended.
Wild-caught history
Historically, many montane African chameleons entered captivity as:
wild-caught animals.
Wild-origin risks
Potential problems include:
- Parasites
- Dehydration
- Shipping stress
- Injuries
- Respiratory disease
- Poor body condition
Captive-bred preference
Documented captive-bred animals should be:
strongly preferred.
Veterinary screening
Wild-origin or uncertain animals should ideally receive:
- Physical examination
- Accurate weight measurement
- Faecal parasite testing
Parasite treatment
Do not medicate simply because an animal may be wild caught.
Treatment should be based upon:
- Diagnosis
- Accurate body weight
- Veterinary guidance
Common health concerns
Potential problems include:
- Chronic overheating
- Dehydration
- Metabolic bone disease
- Parasites
- Respiratory disease
- Eye disease
- Burns
- Nutritional imbalance
- Reproductive complications
Overheating
Overheating is one of the most important preventable risks.
Signs of overheating
Watch for:
- Persistent gaping
- Restlessness
- Moving unusually low in the enclosure
- Weakness
- Collapse
Dehydration
Signs may include:
- Sunken eyes
- Orange or dry urates
- Reduced activity
- Weight loss
Metabolic bone disease
Possible signs include:
- Weak grip
- Tremors
- Bent limbs
- Soft jaw
- Fractures
MBD prevention
Provide:
- Appropriate UVB
- Calcium
- Properly gut-loaded prey
- Correct temperatures
Respiratory disease
Risk factors include:
- Poor airflow
- Constant wetness
- Warm humid 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:
abnormal and potentially serious.
Burns
Prevent direct access to:
- Heat lamps
- Hot fixtures
Reproductive disease
Females may experience:
- Calcium depletion
- Egg retention
- Dystocia
Possible dystocia
Seek veterinary assessment for:
- Persistent unsuccessful digging
- Severe weakness
- Straining
- Continued abdominal enlargement
- Prolonged anorexia
Veterinary red flags
Consult a suitably experienced reptile veterinarian for:
- Persistent anorexia
- Significant weight loss
- Severe dehydration
- Weak grip
- Tremors
- Persistent daytime eye closure
- Abnormal breathing
- Suspected reproductive problems
Cleaning
Remove promptly:
- Faeces
- Dead insects
- Rotting leaves
- Mould
Drainage maintenance
Inspect drainage regularly for:
- Blockages
- Standing water
- Waterlogging
Seasonal husbandry
Seasonal variation is important for montane species.
Cooler periods
Seasonal cooling can include:
- Slightly shorter photoperiod
- Lower daytime temperatures
- Cooler nights
- Reduced feeding
Wetter periods
During wetter periods:
- Increase misting moderately
- Maintain high nighttime humidity
- Maintain excellent ventilation
Drier periods
During drier periods:
- Reduce misting somewhat
- Continue reliable drinking opportunities
- Avoid chronic dehydration
Brumation
Trioceros deremensis does not undergo:
temperate-style brumation.
Conservation
The restricted montane distribution of this species makes habitat protection particularly important.
Potential pressures include:
- Forest clearance
- Agricultural expansion
- Habitat fragmentation
- Climate change
- Collection
CITES
Trioceros deremensis is regulated under:
CITES Appendix II.
International movement
International trade may require:
- CITES documentation
- Export permits
- Import documentation
- Other national wildlife documentation
Ireland, Northern Ireland and Great Britain
Rules can differ between jurisdictions.
Always check current requirements before:
- Import
- Export
- Commercial movement
- International sale
Provenance
Retain permanent records including:
- Scientific name
- Breeder/supplier
- Hatch date where known
- Parentage
- Locality information where known
- CITES paperwork
- Import/export documentation
Never release captive animals
Never release captive chameleons into the wild.
Common husbandry mistakes
Common mistakes include:
- Keeping the species too warm
- Providing excessively hot basking temperatures
- Maintaining warm nights
- Failing to provide nighttime cooling
- Failing to plan for summer heatwaves
- Keeping nighttime humidity too low
- Creating warm stagnant humidity
- Poor ventilation
- Inadequate hydration
- Using very brief misting only
- Providing inadequate UVB
- Providing excessive UVB without shade
- Sparse foliage
- Feeding only one feeder species
- Over-supplementing
- Overfeeding adults
- Housing adults together
- Allowing constant visual contact
- Providing inadequate nesting substrate
- Disturbing nesting females
- Incubating eggs too warm
- Failing to quarantine
- Purchasing undocumented animals
Responsible ownership
Before obtaining an Usambara Three-Horned Chameleon, ensure you can provide:
- Correct species identification
- Legally documented provenance
- At least approximately 60 × 60 × 120 cm (2 × 2 × 4 ft) adult housing
- Preferably 90 × 60 × 120 cm (3 × 2 × 4 ft) or larger
- Dense live planting
- Strong interconnected branches
- Excellent ventilation
- Effective drainage
- Day temperatures around 20–24°C (68–75°F)
- Gentle basking around 25–28°C (77–82°F)
- Cooler areas around 18–21°C (64–70°F)
- Night temperatures around 12–17°C (54–63°F)
- Reliable nighttime cooling
- Day humidity around 60–75%
- Night humidity around 85–100%
- Reliable misting
- Drinking droplets
- Appropriate UVB
- UVI approximately 1.5–2.5 at the principal exposed basking perch
- Extensive shaded retreats
- Bright visible-spectrum lighting
- A varied live-invertebrate diet
- Proper gut loading
- Conservative supplementation
- Individual housing
- Suitable nesting provision for mature females
- Cool incubation facilities if breeding
- Quarantine facilities
- Access to a chameleon-experienced veterinarian
Summary
The Usambara Three-Horned Chameleon (Trioceros deremensis) is a specialised montane species endemic to Tanzania’s Eastern Arc Mountains.
Adults generally reach approximately:
25–35 cm (10–14 in)
total length.
For one adult, provide at least approximately:
60 × 60 × 120 cm (2 × 2 × 4 ft),
with:
90 × 60 × 120 cm (3 × 2 × 4 ft)
or larger preferred.
Maintain daytime temperatures around:
20–24°C (68–75°F)
with gentle basking around:
25–28°C (77–82°F).
Provide cooler shaded areas around:
18–21°C (64–70°F)
and allow nighttime temperatures to fall toward approximately:
12–17°C (54–63°F).
Maintain daytime humidity around:
60–75%
with nighttime humidity rising toward:
85–100%
while maintaining excellent ventilation.
Provide moderate UVB producing approximately:
UVI 1.5–2.5
at the main exposed basking position.
Feed a varied diet of appropriately sized:
- Crickets
- Locusts
- Roaches
- Silkworms
- Black soldier fly larvae
- Flies
- Moths
- Other suitable cultured invertebrates
with proper gut loading and conservative supplementation.
Adults should normally be:
housed individually.
Females are egg-laying and require suitable deep nesting substrate. Eggs require relatively cool incubation compared with those of many warm-climate chameleons.
Trioceros deremensis is regulated under:
CITES Appendix II.
The defining principle of successful husbandry is to reproduce the species’ montane environment:
moderate days, cool nights, high nighttime humidity, strong ventilation and dense vegetation.
For keepers able to reliably provide those conditions throughout the year—including during summer heatwaves—the Usambara Three-Horned Chameleon is one of the most remarkable specialist chameleons maintained in captivity.
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