Yellow-Headed Day Gecko (Phelsuma klemmeri) Care Sheet
The Yellow-Headed Day Gecko (Phelsuma klemmeri), also commonly known as Klemmer’s Day Gecko, is a small and exceptionally colourful diurnal gecko native to north-western Madagascar.
It is immediately recognisable by its bright yellow head, turquoise to blue-green body and contrasting dark lateral markings. Despite its small size, Phelsuma klemmeri is an extremely active species that makes extensive use of vertical space.
In the wild, these geckos are strongly associated with bamboo and other narrow vertical vegetation. Captive accommodation should reflect this by providing numerous thin bamboo stems, branches and elevated retreats rather than simply offering an empty tall enclosure.
Like other Phelsuma, Yellow-Headed Day Geckos are strongly diurnal and require appropriate UVB, bright visible lighting and access to a localised basking area.
They possess delicate skin and exceptional climbing ability. Although individuals may become confident enough to approach keepers for food, they should primarily be considered display reptiles rather than animals intended for routine handling.
Successful husbandry centres on a secure vertical enclosure, abundant bamboo and fine climbing structures, appropriate UVB, bright visible lighting, a suitable thermal gradient, fluctuating humidity, excellent ventilation and a varied omnivorous diet.
Quick Facts
Scientific name: Phelsuma klemmeri
Common names: Yellow-Headed Day Gecko, Klemmer’s Day Gecko
Family: Gekkonidae
Native range: North-western Madagascar
Lifestyle: Arboreal
Activity: Diurnal
Adult length: Approximately 3–4 inches including the tail
Lifespan: Approximately 10–15+ years with excellent care
Experience level: Intermediate
Diet: Omnivorous
Temperament: Alert, extremely fast and active
Adult enclosure: Approximately 18" × 18" × 24" minimum for one adult; larger preferred
Basking area: Approximately 28–31°C
General daytime temperature: Approximately 23–27°C
Cool area: Approximately 21–24°C
Night temperature: Approximately 18–22°C
Humidity: Approximately 60–80% with regular drying periods
UVB: Essential
Handling: Not recommended except when necessary
Social housing: Individual housing safest; compatible groups may be possible for experienced keepers
Natural Distribution
Phelsuma klemmeri is endemic to north-western Madagascar.
Its natural distribution is relatively restricted.
The species is particularly associated with bamboo habitat.
Restricted-range species can be vulnerable to:
- Habitat destruction
- Habitat fragmentation
- Environmental change
- Collection pressure
Responsible captive breeding is therefore particularly important.
Natural Habitat
Yellow-Headed Day Geckos inhabit warm tropical environments containing abundant vertical vegetation.
They are particularly associated with:
- Bamboo
- Narrow stems
- Trees
- Shrubs
- Dense vegetation
Bamboo is especially significant because it provides:
- Climbing surfaces
- Shelter
- Egg-laying sites
- Escape routes
- Basking positions
Captive accommodation should reflect this natural association.
Appearance
The Yellow-Headed Day Gecko is one of the most distinctive members of the genus.
Typical colouration includes:
- Bright yellow head
- Turquoise or blue-green body
- Dark lateral stripe
- Pale underside
- Dark eye markings
The contrast between the yellow head and blue-green body makes the species immediately recognisable.
Adult Size
Adults generally reach approximately:
3–4 inches total length
including the tail.
Their small size should not be used as justification for keeping them in tiny enclosures.
They are exceptionally active and benefit greatly from additional space.
Behaviour
Yellow-Headed Day Geckos are strongly active during daylight.
Normal behaviour includes:
- Basking
- Climbing
- Hunting insects
- Exploring bamboo
- Feeding on nectar-like foods
- Drinking droplets
- Social signalling
- Moving between exposed and shaded areas
They are highly visual reptiles and quickly respond to movement.
Temperament
Klemmeri are generally alert and extremely quick.
Captive-bred animals may become relatively confident around routine feeding.
Some individuals will approach feeding cups or take food close to a keeper.
This does not mean they should be routinely handled.
Handling
Routine handling is not recommended.
When movement is necessary, guiding the gecko into a secure container is generally safer than attempting to catch it by hand.
Never:
- Grab the tail
- Squeeze the body
- Restrain the skin
- Chase the animal excessively
- Handle it in an unsecured room
Delicate Skin
Like other Phelsuma, Yellow-Headed Day Geckos possess delicate skin.
Rough restraint can cause sections of skin to tear away.
This is an important reason to avoid unnecessary physical restraint.
Tail Loss
The tail can be shed if the animal is severely stressed or improperly restrained.
Never lift or restrain the gecko by its tail.
A regenerated tail may differ in appearance from the original.
Enclosure Size
For a single adult:
18" × 18" × 24"
should be considered a practical minimum.
Larger accommodation is strongly encouraged where possible.
Additional space allows:
- More exercise
- More climbing routes
- Better thermal gradients
- Better UV gradients
- Greater planting
- More behavioural choice
Vertical Space
Vertical space is essential.
The enclosure should contain usable climbing structures throughout its height.
A tall but sparsely furnished enclosure does not provide suitable habitat.
Bamboo
Bamboo should form a major component of the enclosure.
Provide numerous stems arranged:
- Vertically
- Horizontally
- Diagonally
Use several diameters, including relatively narrow stems appropriate for this small species.
Hollow Bamboo
Sections of hollow bamboo can provide valuable:
- Retreats
- Sleeping locations
- Egg-laying sites
Openings must be large enough for the gecko to enter and leave safely.
Avoid creating inaccessible areas where an animal could become trapped.
Climbing Structure
In addition to bamboo, provide:
- Fine natural branches
- Cork
- Vines
- Live plants
- Artificial foliage where appropriate
All furnishings should be securely positioned.
Foliage
Dense foliage provides:
- Security
- Shade
- Drinking surfaces
- Climbing opportunities
- Humidity gradients
- Visual barriers
Suitable reptile-safe plants may include:
- Pothos
- Ficus
- Schefflera
- Bromeliads
- Other suitable tropical plants
Ensure all plants are free from pesticides and harmful chemicals.
Hides
Provide elevated cover using:
- Hollow bamboo
- Dense vegetation
- Cork
- Concealed areas behind plants
The gecko should always be able to move completely out of view.
Enclosure Security
Escape prevention is critical.
Because of their small size, Yellow-Headed Day Geckos can exploit extremely small openings.
Carefully inspect:
- Doors
- Sliding tracks
- Ventilation
- Cable ports
- Lid fittings
- Gaps around backgrounds
before introducing the animal.
Ventilation Mesh
Ventilation mesh must be fine enough to prevent escape while still allowing excellent airflow.
Remember that tiny feeder insects may also escape through coarse mesh.
Substrate
Suitable substrates include:
- Organic topsoil
- Coco fibre
- Tropical soil mixtures
- Orchid bark
- Leaf litter
The substrate should retain some moisture while allowing adequate drainage.
Bioactive Housing
Yellow-Headed Day Geckos are excellent candidates for naturalistic bioactive enclosures.
A properly established system may contain:
- Live plants
- Natural soil
- Leaf litter
- Springtails
- Suitable small isopods
Bioactive housing does not eliminate the need for routine maintenance and health monitoring.
Temperature Gradient
Provide a clear thermal gradient.
The entire enclosure should never be maintained at basking temperature.
Basking Temperature
Provide a localised basking area around:
28–31°C
The gecko must be able to move away easily.
General Day Temperature
Most of the enclosure can remain around:
23–27°C
Cool Area
Provide cooler shaded areas around:
21–24°C
Night Temperature
Night temperatures can generally fall to approximately:
18–22°C
A modest nighttime reduction is appropriate.
Overheating
Small arboreal enclosures can overheat extremely quickly.
Take particular care during warm weather.
Always ensure shaded cooler retreats remain available.
Heating
Where supplemental heating is necessary, suitable overhead heating can be used to create a localised basking zone.
Heating equipment should be safely controlled and monitored.
Temperature Monitoring
Use reliable digital thermometers to monitor:
- Warm areas
- Cool areas
An infrared thermometer is useful for checking basking surface temperatures.
UVB
UVB is essential.
Yellow-Headed Day Geckos are strongly diurnal reptiles naturally exposed to daylight.
Appropriate UVB supports:
- Vitamin D3 synthesis
- Calcium metabolism
- Healthy skeletal development
- Natural basking behaviour
UV Gradient
The enclosure should provide:
- Appropriate UV exposure around basking areas
- Moderate exposure
- Filtered exposure
- Complete shade
The gecko must be able to regulate its exposure behaviourally.
UVB Placement
UVB effectiveness depends on:
- Lamp output
- Distance
- Mesh obstruction
- Reflector
- Enclosure design
Follow current manufacturer recommendations when selecting and positioning UVB equipment.
Visible Lighting
Bright visible lighting is extremely important.
These are strongly diurnal reptiles.
Good lighting supports:
- Natural activity
- Feeding
- Basking
- Colour display
- Plant growth
Suitable daylight LED lighting can be used alongside UVB and basking equipment.
Photoperiod
Approximately:
11–13 hours of daylight
is suitable depending on season.
Night Lighting
The enclosure should become dark at night.
Do not leave visible red, blue or purple lamps operating throughout the night.
Humidity
General humidity around:
60–80%
is appropriate.
Humidity should fluctuate rather than remain constantly high.
Humidity Cycle
Humidity will normally increase following misting before gradually falling as ventilation dries the enclosure.
This daily fluctuation is desirable.
The enclosure should not remain permanently saturated.
Misting
Light misting:
Once or twice daily
works well in many setups.
Frequency depends on:
- Ventilation
- Planting
- Substrate
- Room humidity
- Season
Allow enclosure surfaces to partially dry between misting sessions.
Hydration
Yellow-Headed Day Geckos frequently drink droplets from:
- Leaves
- Glass
- Bamboo
- Branches
Regular misting therefore provides important drinking opportunities.
Water Bowl
A small shallow water dish can also be provided.
Keep it clean and replace the water regularly.
Ventilation
Excellent ventilation is essential.
High humidity combined with stagnant air can encourage:
- Mould
- Bacterial growth
- Skin problems
- Respiratory disease
The enclosure should remain humid but fresh.
Diet
Yellow-Headed Day Geckos are omnivorous.
Their captive diet should include:
- Appropriately sized live insects
- Suitable nutritionally complete gecko diet
Dietary variety is important.
Live Insects
Suitable feeders include:
- Flightless fruit flies
- Small crickets
- Tiny roach nymphs
- Small black soldier fly larvae
- Other appropriately sized captive-produced insects
Prey must be appropriately sized for this relatively small species.
Gut Loading
Feeder insects should be properly gut-loaded before use.
Suitable gut-loading foods include:
- Leafy greens
- Vegetables
- Appropriate commercial gut-loading products
Calcium Supplementation
Live insects should be appropriately dusted with calcium.
Requirements depend on:
- Age
- UVB provision
- Overall diet
- Reproductive status
Growing juveniles and breeding females require particularly careful calcium management.
Multivitamins
A suitable reptile multivitamin can be offered periodically.
Avoid excessive supplementation.
Complete Gecko Diet
A nutritionally complete commercial gecko diet can provide the fruit and nectar-like component of the captive diet.
Prepare according to manufacturer instructions.
Because these geckos are small, offer appropriately sized portions.
Remove uneaten food before it spoils.
Fresh Fruit
Small quantities of suitable soft fruit may occasionally be offered as enrichment.
Fresh fruit should not replace a nutritionally complete gecko diet.
Feeding Frequency
Juveniles can generally be offered food:
Daily or almost daily
Adults can generally be fed:
4–5 times per week
using a varied combination of live insects and complete gecko diet.
Adjust feeding according to:
- Body condition
- Activity
- Reproductive status
Feeding Ledges
Elevated feeding stations are particularly useful.
They allow natural arboreal feeding without requiring the gecko to descend to the enclosure floor.
Food Enrichment
Encourage natural feeding behaviour through:
- Live insect hunting
- Varying feeding locations
- Elevated feeding stations
- Controlled hunting among bamboo and vegetation
Social Housing
Individual housing is the safest general recommendation.
However, Phelsuma klemmeri is sometimes maintained successfully in compatible pairs or carefully managed groups by experienced keepers.
Social housing should never be assumed to be automatically safe.
Group Housing
Where multiple animals are housed together, provide:
- A substantially larger enclosure
- Multiple basking positions
- Multiple feeding stations
- Extensive visual barriers
- Numerous retreats
- Abundant bamboo
Every animal must be able to feed, bask and retreat without interference.
Adult Males
Multiple mature males should generally not be housed together.
Territorial aggression can occur.
Male/Female Housing
Compatible male/female groups may sometimes be maintained by experienced breeders.
Females must be monitored carefully for:
- Persistent courtship
- Mating pressure
- Weight loss
- Feeding competition
- Stress
Separate accommodation should always be available.
Sexing
Mature males generally develop:
- More pronounced preanal/femoral pores
- Broader tail base
- More obvious reproductive structures
Sexing young juveniles can be considerably more difficult.
Breeding
Yellow-Headed Day Geckos can be bred successfully in captivity.
Responsible captive breeding is particularly valuable because of the species’ restricted natural distribution.
Only healthy mature animals in excellent condition should be bred.
Female Condition
Breeding females require excellent:
- Nutrition
- Calcium provision
- UVB
- Hydration
- Body condition
Repeated egg production can place substantial demands on small females.
Egg Laying
Females generally produce:
2 eggs per clutch
although single eggs may occasionally occur.
Multiple clutches may be produced during a breeding season.
Egg Deposition
Females commonly seek protected locations such as:
- Hollow bamboo
- Bamboo crevices
- Cork
- Plant structures
- Other concealed enclosure furnishings
Providing suitable bamboo laying sites is particularly useful.
Egg Incubation
Eggs can generally be incubated around:
24–27°C
under stable conditions.
Incubation commonly lasts approximately:
45–70+ days
depending on temperature and other factors.
Avoid excessive incubation temperatures.
Eggs should not be rotated after laying.
Hatchlings
Hatchlings are extremely small and fast.
Provide:
- Secure escape-proof accommodation
- Very fine climbing structures
- Small bamboo
- Dense foliage
- Appropriate UVB
- Moderate basking temperatures
- Regular misting
- Tiny live prey
- Suitable complete gecko diet
- Appropriate supplementation
Hatchling Food
Suitable prey may include:
- Flightless fruit flies
- Pinhead crickets
- Tiny roach nymphs
- Other appropriately sized captive-produced feeders
Growing juveniles should receive appropriate calcium supplementation.
Hatchling Security
Escape prevention is critical.
Young Yellow-Headed Day Geckos can exploit extremely small gaps around:
- Doors
- Ventilation
- Cable ports
- Sliding tracks
- Lid fittings
Check housing carefully before introducing hatchlings.
Quarantine
All newly acquired reptiles should undergo quarantine.
A minimum of approximately:
90 days
is a sensible starting point.
Monitor:
- Feeding
- Weight
- Faeces
- Skin
- Shedding
- Respiration
- Activity
Shedding
Healthy Yellow-Headed Day Geckos generally shed successfully when correctly hydrated.
Retained shed may occasionally occur around:
- Toes
- Tail
- Limbs
Avoid forcibly pulling firmly attached skin.
Toe Health
Healthy adhesive toe pads are essential for normal climbing.
Retained shed or contamination can interfere with grip.
Inspect the feet periodically.
Signs of Good Health
A healthy Yellow-Headed Day Gecko should generally display:
- Clear bright eyes
- Strong grip
- Alert daytime activity
- Regular basking
- Active hunting
- Appropriate body condition
- Smooth coordinated climbing
- Healthy skin
- Normal faeces
Warning Signs
Seek veterinary advice for:
- Persistent food refusal
- Unexplained weight loss
- Weak grip
- Tremors
- Soft jaw
- Swollen limbs
- Respiratory symptoms
- Persistent diarrhoea
- Severe retained shed
- Skin lesions
- Significant lethargy
Common Husbandry Mistakes
Assuming Small Gecko Means Tiny Enclosure
Klemmeri are extremely active and benefit considerably from additional space.
Inadequate Bamboo
This species has a strong natural association with bamboo and should be provided with numerous suitable stems.
Inadequate UVB
These are strongly diurnal reptiles and require appropriate UVB.
Poor Visible Lighting
Bright daytime illumination is important for natural activity and colour display.
Keeping the Entire Enclosure Too Hot
Provide a localised basking area alongside cooler shaded retreats.
Constantly Wet Conditions
Humidity should fluctuate and enclosure surfaces should partially dry.
Poor Ventilation
High humidity must be combined with effective airflow.
Feeding Only Fruit
A balanced diet requires appropriate live prey, calcium, vitamins and minerals.
Feeder Insects Too Large
These are small geckos and require appropriately sized prey.
Assuming Group Housing Is Always Safe
Even a species sometimes maintained socially can develop aggression or competition.
Excessive Handling
Their speed and delicate skin make them unsuitable for routine handling.
Insecure Enclosure
Tiny gaps can result in an escaped gecko.
Captive-Bred Animals
Captive-bred Yellow-Headed Day Geckos should be strongly preferred.
Advantages include:
- Known origin
- Established feeding
- Better adaptation to captive conditions
- Reduced parasite concerns
- Reduced collection pressure on wild populations
Responsible captive breeding and accurate record keeping help maintain sustainable captive populations.
Responsible Ownership
Before acquiring a Yellow-Headed Day Gecko, ensure you can provide:
- A secure vertical enclosure
- Extensive bamboo and fine climbing structure
- Dense foliage
- Appropriate UVB
- Bright visible lighting
- A localised basking area
- Cooler shaded retreats
- High but fluctuating humidity
- Excellent ventilation
- Regular misting
- Appropriately sized live insects
- Complete gecko diet
- Appropriate supplementation
- Long-term veterinary care
Suitability
Advantages
- Spectacular yellow and turquoise colouration
- Small adult size
- Highly active during daylight
- Fascinating bamboo-associated behaviour
- Excellent planted-display species
- Captive breeding achievable
- Well suited to naturalistic enclosures
Considerations
- Extremely fast
- Delicate skin
- Not suitable for routine handling
- Escape-proof housing essential
- UVB required
- Bright visible lighting required
- Requires very small live feeder insects
- Social housing requires careful monitoring
- Careful humidity management required
Summary
The Yellow-Headed Day Gecko (Phelsuma klemmeri) is a small, exceptionally colourful Madagascan day gecko with a strong natural association with bamboo.
Successful husbandry centres on:
- Approximately 18" × 18" × 24" minimum adult accommodation
- Larger accommodation preferred where possible
- Extensive bamboo and fine climbing routes
- Hollow bamboo and elevated retreats
- Dense foliage and visual cover
- A localised basking area around 28–31°C
- General daytime temperatures around 23–27°C
- Cooler shaded areas around 21–24°C
- Appropriate nighttime cooling
- Strong appropriate UVB
- Bright visible daytime lighting
- Approximately 60–80% humidity with regular drying periods
- Excellent ventilation
- Regular misting
- Appropriately sized gut-loaded live insects
- Suitable complete gecko diet
- Appropriate calcium supplementation
- Minimal unnecessary handling
- Careful monitoring of any socially housed animals
When provided with appropriate UVB, bright lighting, abundant bamboo, correct nutrition and carefully managed humidity, captive-bred Yellow-Headed Day Geckos can make exceptionally attractive and engaging display reptiles.
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