Electric Blue Day Gecko Care

Electric blue day gecko care means a tall, planted enclosure. It means warm days, a cooler night, and high humidity. It also means small insects dusted with calcium.

It means one more thing most keepers do not expect. Every legal pet Lygodactylus williamsi must be captive bred. Wild collection and export of this species is now banned under international law.

This dwarf gecko is not a Phelsuma “true day gecko.” It belongs to the separate genus Lygodactylus, a group of small dwarf geckos. The more familiar Phelsuma day geckos sit in their own genus entirely.

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Lygodactylus, not Phelsuma

Animal Diversity Web classifies this gecko under Family Gekkonidae, Genus Lygodactylus, Species williamsi. The genus Lygodactylus holds dozens of small dwarf gecko species across Africa and Madagascar. That is separate from Phelsuma, the genus most people picture when they hear “day gecko.”

That split matters for husbandry. The Phelsuma day gecko care guide on this site covers a genus of mid sized, more food generalist lizards.

This dwarf species is smaller and more fragile. It is also more territorial toward its own sex, and it comes with a conservation story that shapes how it should be bought. For background on the species itself, see the electric blue day gecko species overview.

For the wider group it gets confused with, see the day gecko species overview.

Why every legal pet must be captive bred

Lygodactylus williamsi is endemic to a tiny slice of the Morogoro Region of Tanzania. The CITES CoP17 proposal that moved it onto Appendix I names only four isolated forest patches as its range. Its extent of occurrence is about 20 square kilometers, and its area of occupancy is under 8 square kilometers.

The gecko lives almost only on one plant, Pandanus rabaiensis, at elevations between 170 and 480 meters. Lose that plant, and the species has almost nowhere else to go.

The same proposal recorded roughly 150,000 individuals in the Kimboza Forest Reserve in 2009. That was a decline of about one third from 2004 levels. Trade pressure over that period was heavy.

Between 2004 and 2009, an estimated 32,310 to 42,610 wild geckos were collected for the pet trade. That is around 15% of the total population over that span. At least 1,200 wild sourced animals were imported into the United States since 2010 alone.

Illegal logging, firewood collection, and mining all threaten the habitat. Collectors also fell Pandanus trees on purpose to reach the geckos.

The species was already added to the European Union’s Wildlife Trade Regulation Annex B in December 2014. Demand rose sharply after the gecko’s blue males appeared in a 2002 field guide.

Tanzania and the European Union jointly submitted the Appendix I proposal. It was adopted at the 17th Conference of the Parties to CITES in 2016 and took effect in 2017. Appendix I is the strictest CITES category, and it bars commercial trade in wild caught specimens.

Tanzanian law separately prohibits any collection or export of the species from the wild, according to Bristol Zoo Project. European zoos have run a coordinated EAZA breeding program since 2015, and Bristol Zoo Project reports a stable population across those collections.

Any electric blue day gecko sold legally today should be several generations removed from the wild. A keeper or breeder should be able to speak plainly to that lineage.

Buying only captive bred stock is not just an ethical preference here. It is the only way to be sure a purchase is legal. It also keeps demand off a species with a wild range smaller than most city parks.

Size, appearance, and lifespan

The electric blue day gecko is one of the smallest commonly kept day active geckos. Its slender body clings to thin plant stems. It does not climb tree trunks the way a giant day gecko does.

Adult males carry the bright turquoise blue color that gives the species its name. They also show an orange throat and a rust colored patch on the back. Females and juveniles run duller, green to bronze, with far less blue.

Male coloration can shift with mood, stress, and temperature. It can grow more or less vivid through the day.

The CITES proposal gives a total length of up to 85 millimeters, about 3.3 inches, tail included. Animals reach full size at 8 to 9 months, and males turn fully turquoise at around 15 to 16 months. Size feeder insects and furnishings for a gecko that small.

No authoritative source gives a captive lifespan for this species. European zoos have kept breeding colonies since 2015, so multi year survival is documented in practice. Treat any specific lifespan figure as unconfirmed.

Enclosure: tall, planted, and enriched

This species spends its life climbing thin stems and leaves. It rarely walks on open ground, so height matters more than floor space.

A vertically oriented, front opening glass terrarium works best. Fill it with dense live or artificial planting, cork bark, and thin branches. That gives the gecko climbing surfaces and hiding spots to feel secure.

General guidance from the Merck Veterinary Manual gives arboreal lizards a baseline volume of about 0.4 cubic meters per 0.1 meter of the animal’s length. That is a useful starting point, since this species has no published minimum of its own. For a fuller breakdown of sizing across species, see the lizard enclosure guide.

For the layout built specifically for this gecko, see the electric blue day gecko enclosure guide.

A single male can live in a smaller enclosure than a group. Males are territorial toward each other, so never house two adult males together.

In the wild, the proposal describes family groups of one male, one female, and a few juveniles sharing a single Pandanus plant. Dominant males expel young males once they reach a certain size.

A pair, or one male with two or three females in a taller enclosure, mirrors that wild structure. It is the standard grouping keepers use to cut stress and aggression.

• Substrate: a moisture retentive, bioactive blend supports humidity and can host a cleanup crew.
• Enclosure style: a front opening glass terrarium built for a vertical bioactive setup eases daily care and misting.
• Furnishing: dense pothos, orchids, or bromeliads, plus cork bark rounds and fine branches at multiple heights.

Heating, lighting, and UVB

The Merck Veterinary Manual’s general guidance calls for a basking site about 5°C warmer than the ambient gradient in arboreal lizards. It also calls for a nighttime drop of about 5°C from the daytime baseline. No published range exists for this gecko alone, so treat the figures below as a common keeper standard.

For a tropical species at low to moderate elevation, that works out to a basking zone in the mid 80s Fahrenheit. Ambient daytime should sit in the high 70s to low 80s Fahrenheit. Nighttime should hold in the low to mid 70s and never go colder.

UVB in the 290 to 300 nanometer range matters for vitamin D3 synthesis in diurnal lizards, per Merck. A low output T5 high output tube built for shaded species suits this gecko’s small size and its taste for dappled light over open sun.

Set the bulb within about 30 centimeters of the highest perch. Replace it every 9 to 12 months even if it still lights up, since UVB output fades before the bulb visibly fails. General guidance on bulbs sits in the heating and UVB guide.

A T5 HO UVB kit built for forest and shade dwelling species gives the low, diffuse output this habitat calls for. Pair it with a dimming or pulse proportional thermostat to keep heat stable.

Humidity and misting

Tropical arboreal reptiles generally need a high humidity microclimate. Merck gives a general range of roughly 60 to 85%, and this species fits that pattern.

Mist the enclosure once or twice daily. Humidity should spike toward the top of that range right after misting, then dry down toward the lower end before the next round.

Good airflow matters alongside that humidity. It stops the stagnant, soggy conditions that favor mold and bacterial growth.

A digital hygrometer and thermometer combo confirms the actual swing instead of a guess. A handheld pressure sprayer suits manual misting, while an automatic misting system suits a more consistent daily cycle.

Diet: small insects plus a fruit component

Like other insectivorous lizards, this gecko should eat a variety of appropriately sized feeder insects, per Merck guidance. Given its size, insects should be no wider than the space between its eyes.

Fruit flies, small crickets, and other tiny feeders are typical staples. Offer them several times a week rather than one large weekly feeding, since a lizard this small cannot process a big meal at once. The feeder insect guide covers sizing and gut loading in more depth.

Dust feeder insects with a high calcium supplement right before offering them. Merck ties that step directly to preventing metabolic bone disease in insectivorous lizards.

The CITES proposal describes the wild diet as small insects and other invertebrates, with ants a prominent part of it. No authoritative source records fruit or nectar in the wild diet. Many keepers still offer a commercial fruit or nectar based gecko diet a few times a week, and that should stay a small supplement rather than a staple.

• Feeder size: small crickets, fruit flies, and similar prey sized to the gecko’s head width, offered 3 to 5 times weekly.
• Calcium: dust every feeding with a calcium supplement containing vitamin D3, alternating with a plain calcium and a multivitamin powder.
• Fruit or nectar: a small smear of commercial gecko diet two to three times weekly, as a supplement rather than a replacement.

Social structure, handling, and temperament

Keep this species as a single male with one or more females. Do not keep it as a lone pet or a same sex group, since adult males are territorial and will fight.

Even a male and female pair benefits from a taller, more planted enclosure than the bare minimum. Extra vertical space lets a stressed animal retreat from a cagemate.

A settled pair will breed readily. The proposal cites captive females laying two eggs every 3 to 6 weeks through the season, with incubation of 60 to 120 days depending on temperature. Plan for that before pairing, since a single female can produce a dozen or more eggs a year.

Handling should stay minimal. This is a fast, small bodied gecko with delicate skin that can tear if grabbed, and like many geckos it can drop its tail when threatened.

Move the animal with a cup, or with your hand cupped loosely around it. Most days should be about watching behavior and color through the glass, not handling.

Health and common problems

The most common preventable problem in insectivorous lizards, per Merck guidance, is metabolic bone disease. It comes from weak UVB exposure paired with inconsistent calcium dusting.

Watch for a soft or bowed lower jaw, tremors, difficulty climbing, or swollen limbs. All of these call for an exotics veterinarian visit rather than a home fix, since visible bone deformity cannot be reversed. The lizard health guide covers warning signs across species.

Because this species needs high humidity, watch for signs it has swung too low or too high. Retained shed around the toes points to low humidity. Mold on plants and open mouth breathing point to excess moisture with poor airflow.

Any gecko eating less, defecating less, or losing color for more than a day or two should see a reptile veterinarian. Small geckos can decline fast once a problem starts.

Cost of setup and ongoing care

The enclosure, lighting, heating, substrate, and furnishings make up the largest upfront cost. The animal itself often costs more than other small geckos, given its captive bred only status and steady demand.

Ongoing costs stay modest and mostly recurring. Feeder insects, supplements, and one UVB bulb a year make up the bulk of it, plus the electricity for lighting and heat.

Because legal specimens must be captive bred, expect to pay more than for a wild caught reptile of similar size elsewhere. That premium reflects the real cost of breeding a small, sensitive species rather than pulling it from a shrinking wild population.

Weekly and monthly care routine

Frequently Asked Questions

Is it legal to own an electric blue day gecko?

Yes, captive bred animals can be owned and sold legally in most places. The ban covers commercial international trade in wild caught animals, since the species was placed on CITES Appendix I in 2016, effective 2017.

How is this species different from a Phelsuma day gecko?

It belongs to the genus Lygodactylus, a separate group of small dwarf geckos. Phelsuma day geckos, such as the gold dust or giant day gecko, belong to genus Phelsuma instead. A good electric blue day gecko care sheet treats this species as smaller and more sensitive than most kept Phelsuma species.

Can I keep two males together?

No. Adult males of this species are territorial toward other males and will fight, sometimes seriously. Wild groups hold a single male with a female and juveniles, and that one male rule carries straight into the terrarium.

Why is this gecko endangered in the wild?

The CITES proposal behind its Appendix I listing found a wild population confined to about 20 square kilometers of forest in Tanzania. Tens of thousands were removed for the pet trade between 2004 and 2009, alongside habitat loss from logging and mining.

Does electric blue day gecko setup need real UVB lighting?

Yes. UVB in the 290 to 300 nanometer range supports vitamin D3 synthesis and calcium regulation in diurnal lizards. Set the bulb within about 30 centimeters of the highest perch and replace it every 9 to 12 months.

What should electric blue day gecko humidity look like day to day?

Expect a swing, not a flat number. Humidity should spike toward 80 to 85% right after misting, then dry down toward 60% before the next round, with good airflow throughout.