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Giant Day Geckos

Kristin Hitchcock

July 8, 2021

Day geckos are a group of geckos that includes about 60 species of reasonably small lizards. These lizards vary quite a bit in appearance and behavior. Most of these lizards are native to areas in the Indian Ocean. Many of them are native to a specific island. This is one reason that they are so many types of this lizard – they all developed independently on separate islands.

These geckos are long-lived, but they are also an extremely high-maintenance pet. They require quite a bit of care, so they are not suitable for new owners. The Giant Day geckos are a type of gecko that belongs in this group, but they share most of their characteristics with other geckos in this group. They are often considered some of the most beautiful geckos, which may be one reason that they are so popular. Their crimson and blue coloration is unique in the reptile world.

They are native specifically to northern Madagascar, as well as a few islets. They commonly hang out near people in gardens and plantations. They have evolved to thrive in tropical rain forests’ hot and humid climate, and these conditions must be recreated in captivity.new gecko divider

Quick Facts about Giant Day Geckos

Species Name  Phelsuma grandis
Family  Gekkonidae
Care Level  High
Temperature  75 to 80°F
Temperament  Active
Color Form  Green-blue with red stripes
Lifespan  15 years
Size  12″
Diet  Varied
Minimum Tank Size  18 x 18 x 24
Tank Set-Up  Lots of climbing, moisture-rich substrate
Compatibility  None

Giant Day Geckos Overview

giant day gecko climbing_Piqsels
Image Credit: Piqsels

Due to their size, this species is often called the Giant Day Gecko or the Madagascar Giant Day Gecko. They belong to the relatively large Phelsuma group, which includes over 70 different gecko species, making it one of the largest reptile groups in the world.

These geckos were originally only found in their native Madagascar. However, they have since been introduced to other tropical and subtropical regions. They now exist as an invasive species outside of their normal range. They are civilization-following lizards, which means that they are often found around human dwellings. They have adapted well to human incursion in their range, which is one reason why they are listed as Least Concerned today.

They eat a range of food in the wild, including invertebrates, small vertebrates, and nectars. If they can fit something into their mouth, they will often eat it. Their relatively lenient diet makes them ideal exotic pets.

How Much Do Giant Day Geckos Cost?

Giant day gecko_Piqsels
Image Credit: Piqsels

Like most geckos, the Giant Day Gecko is relatively inexpensive. You can usually find one easily for around $70. Most places that sell lizards will have these pets occasionally. Furthermore, many online stores also sell these lizards.

Your best option is to find a breeder near you. Breeders often take better care of their pets than pet stores, mainly because they are more knowledgeable about taking care of the animal. For this reason, they are often healthy and tamer if purchased directly from a breeder.

Furthermore, if you purchase from a breeder, you will have a better idea of how the lizard was raised. Ask about the living conditions that the lizard grew up in and where the parents are currently located. If the parents appear healthy and robust, the breeder likely knows how to take care of geckos, and the babies will be high-quality.

You can also ask the breeder for advice on how to take care of your new gecko. They’ll be able to inform you about specific food requirements and habitat requirements that your lizard may prefer.

Typical Behavior & Temperament

giant day gecko_Christo Ras_Pixabay
Image Credit: Christo Ras, Pixabay

Unlike many lizards, the Giant Day Gecko is active during the day. That is one reason that they have the word day in their name. Despite being larger than most geckos, these geckos are still quite fragile when compared to other lizards. They should not be handled extensively, as they can potentially fall and become injured. Their skin also isn’t suited for regular handling and is quite delicate. It can easily be injured and irritated by human hands.

When scared, these lizards will drop their tails. This is a defensive mechanism that is meant to distract the predators. The idea is that the predators will see the wiggling tail and go after it instead of the lizard. Their tails do regenerate after some time, but usually not to the full extent. They will always look just a little bit weird after dropping their tail.

They may also bite if they feel threatened, though they are much more likely to run. Typically biting only occurs if they are unable to run, such as if you’re holding them between two hands. While they are geckos, they are large enough to break the skin.

Males can be territorial towards other males, so they should be kept apart. However, even females and male-female pairs can become violent and will often need to be kept in separate habitats.

Like many lizards, the Giant Day Gecko is very good at climbing. They have tiny filaments on their toes that allow them to stick to almost any surface. They can easily climb up the glass on their container and even on the ceiling. They tend to be escape artists for this reason.

Appearance & Varieties

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Image Credit: moonzigg, Pixabay

These geckos are well-known for their green-blue coloration and crimson lines. They are one of the showier breeds of gecko, which is also why they are more popular. Their colors tend to be very bright. Stressed individuals will be a more muted, dark green, though. Watching your lizard’s color changes is a good indicator of how they are feeling.

While these geckos are giant compared to other Day Geckos, they are still relatively small. They must be handled delicately despite their “giant” status.

How to Take Care of a Giant Day Gecko

giant day gecko crawling_Piqsels
Image Credit: Piqsels

Habitat, Tank Conditions & Setup

Due to their larger-than-average size, these geckos require a bit more space than other Day Geckos. An 18 x 18 x 24 enclosure is often the best option for a single gecko or an adult pair. However, be aware that some adults may need more room than this to get along with others. Therefore, you may want to plan on a larger container if you are keeping more than one.

Males should never be kept together as they are pretty territorial. It will always result in fighting and injuries to one of the geckos.

Live Plants

Maintaining live plants within the enclosure is highly recommended, as it provides something for the lizards to climb on and improves the moisture content of their enclosure. Of course, the plants should be safe for the lizard and have large enough stems for them to climb on. They will trample weaker plants due to their large size, ensuring the plant is large and hardy enough to survive the lizard.

Substrate

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Image Credit: Gretta Bartoli, Pixabay

Their substrate is essential, as it is essential in keeping the humidity high enough within the enclosure. There are lots of potentially significant substrates you should use. Preferably, it should be some soil mix that can handle plants as well, so that you can plant live plants directly into the habitat. Alternatively, you can keep plants in their little pots inside the substrate, but it is often easier to use lizard-safe soil that will hold plenty of moisture.

Climbing Spots

You should ensure that there are plenty of climbing spaces for the lizard as well. This includes pieces of bark, large sticks, plants, and branches of all sorts. This species does a lot of climbing in the wild, so they must be provided with those opportunities in captivity. Be sure that the options you choose are strong enough to hold up the lizard, as they can get very large as adults. You may have to do some searching before you find things capable of supporting this lizard safely.

Temperature

giant day gecko_DomenicBlair_Pixabay
Image Credit: DomenicBlair, Pixabay

These geckos come from a typical area. Their average temperature range should be around 75 to 80°F. A basking area should be provided a bit warmer as 85 to 90°F. You can use a halogen light to create this basking area. Be sure to include a UVB bulb as well. UVB is essential for lizards, but they often can’t get it in captivity. This light comes naturally from the sun but does not make it through window glass. Therefore, unless your lizard is outside, they won’t be receiving UVB light.

Luckily, they do provide small bulbs that can be added to a basking like to meet this need.

Humidity

The humidity requirement for this species is relatively high. The humidity should remain at 60 to 70%, which is much higher than in most homes. Daily misting is often required to maintain this high humidity and keep the substrate moist. The gecko will also drink the water droplets from the misting, which is how they naturally get water in the wild. There should be plenty of ventilation in the habitat, though. Droplets should not stick around for longer than 24 hours.

A water dish can be supplied as long as it is shallow. However, if you mist the enclosure daily, this will not be necessary. You will need a hygrometer to measure the humidity of the enclosure.

Do Giant Day Geckos Get Along with Other Pets?

giant day gecko II_Piqsels
Image Credit: Piqsels

Most of the time, you’ll want to keep your Giant Day Geckos housed alone. They will eat any animal that is smaller than them, which includes most frogs and other geckos. They are only suitable with species that are about the same size, though they may still fight quite a bit.

Furthermore, Giant Day Geckos require a lot of space. They will use every inch of their enclosure every day, as they are a pretty active species. Adding in more species can easily cause overcrowding and other issues. While these lizards may look a bit too small for the size tank we recommend, their high activity level makes the larger space required.

What to Feed Your Giant Day Geckos

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Image Credit: Pixabay

Giant Day Geckos have a varied diet. In the wild, they eat just about anything they find. Their diet in captivity can be similar. They can eat roaches, silkworms, waxworms, and butter worms, as well as a variety of tropical fruits. Anything small enough to fit in their mouth and not be a choking hazard will be suitable.

Most of the time, the geckos will need to eat about twice a week, eating three to five insects during that time. Breeding females and juveniles will need food about five to seven times a week, as they are still growing and using up quite a bit of energy. Morning is the best time for feedings, as they are most active during these periods.

You should gut-load insects before feeding them to your gecko to improve their diet and nutrition. When the insects eat, your lizard will eat. You should also use a calcium powder to dust the insects before feeding them to your gecko, as they often do not get enough calcium when in captivity.

Alternatively, you can feed them a commercial diet that is nutritionally balanced. There are quite a few options for opportunistic lizards. However, live insects are still recommended as well.

Keeping Your Giant Day Lizard Healthy

giant day gecko_Marcel Langthim_Pixabay
Image Credit: Marcel Langthim, Pixabay

These lizards are usually very healthy when taken care of correctly. If they are not taken care of properly, they can develop a variety of problems. For instance, if there is improper humidity in their habitat or unsanitary conditions, they may not shed their skin correctly. Like all lizards, they shed their skin as they grow to remain healthy.

If their skin does not come of appropriately, it can cut off circulation to the constricted body part. Many geckos lose fingers and toes in this manner. It is essential to keep the humidity perfect when they’re shedding and keep an eye on the gecko to ensure that all of their skin comes off properly.

Parasitic infections are also common if they are fed infected foods. Weight loss, vomiting, and skin disorders can all be indicators of parasites. More often than not, though, these infections go unnoticed and are mainly free from symptoms. Antiparasitic medication is often required.

Metabolic bone disease can occur if these geckos do not consume enough vitamin D and calcium. UVB is necessary for the lizard to produce vitamin D, and calcium must often be supplemented. You can use a powder or gut-load the insects with a particular formulation that is high in calcium. Without these two vitamins, your lizard’s bones will become weak. This can cause deformities if they are growing, as well as brittle bones.

Breeding

giant day gecko_Denis Doukhan_Pixabay
Image Credit: Denis Doukhan, Pixabay

It is common for male-female pairs to be kept together in an enclosure, as they often have the highest chance of getting along. However, this often results in mating, so it is essential to keep this in mind when deciding to house two Giant Day Geckos together. If the proper tank conditions are maintained, these lizards will often breed and lay eggs regularly.

Keeping smaller lizards is precisely the same as taking care of more giant lizards, except that everything should be smaller. You can use smaller branches and smaller food items. Many people utilize small plastic containers to house hatchlings. Of course, they should be kept separately to prevent fighting and injuries. Small crickets are often an excellent food source after your lizard’s first shed.

Typically, females lay eggs every breeding season about twice. They usually breed from December to June, though this can shift slightly when in captivity.new gecko divider

Are Giant Day Geckos Suitable for You?

Due to their specific habitat requirements and delicate nature, we only recommend these lizards for experienced owners. Their diet is pretty easy to figure out, but everything else requires a bit more work. Some experience is often necessary when getting the temperature and humidity correct. These lizards will not thrive while beginners figure out how to control these parameters. They also must be handled very carefully. It is easy to injure them accidentally.

In general, these geckos also need a larger tank than you might think. They are pretty active and need room to roam. You’ll probably end up with a bigger tank than you think you need – until you see just how active these little lizards are. For this reason, we recommend planning for more room than you’d imagine a gecko needs.

These geckos require a bit more regular care than other exotic pets. They need to be fed gut-loaded insects multiple times a week, and their tank needs to be misted every day. You’ll also have to spot clean their tank regularly and potentially take care of live plants inside their habitat. All this adds up to quite a bit of work.


Featured Image Credit: Evgeny Murtola, Shutterstock

Kristin Hitchcock

Kristin is passionate about helping pet parents create a fulfilling life with their pets by informing them on the latest scientific research and helping them choose the best products for their pets. She currently resides in Tennessee with four dogs, three cats, two fish, and a lizard, though she has dreams of owning chickens one-day!