The mourning gecko is one of the most biologically unusual lizards in the pet trade. Almost every individual is female, reproduction requires no males, and each egg produces a genetic clone of the mother. That is genuinely remarkable for a vertebrate animal, and it is only the beginning of what makes this species interesting to keep. They are small, social, easy to house, and active enough to observe throughout the day. For a keeper who wants a vivarium species with a real natural history story behind it, mourning geckos are hard to beat.
Table of Contents
Species Summary
The mourning gecko (Lepidodactylus lugubris) is a small arboreal gecko native to coastal regions throughout the Indo-Pacific — found from the Maldives and Sri Lanka across Southeast Asia, through the Pacific Islands, and as far east as the Galapagos. It is one of the most widespread gecko species in the world, in large part because of its parthenogenetic reproduction, which allows a single individual to establish a new population without a mate. It thrives in coastal vegetation, forest edges, and human settlements.
| Attribute | Details |
|---|---|
| Scientific name | Lepidodactylus lugubris |
| Common name | Mourning gecko |
| Origin | Indo-Pacific — widespread from Maldives to Galapagos |
| Adult size | 3–4 inches (7–10cm) including tail |
| Lifespan | 10–15 years in captivity |
| Diet | Omnivore — insects and fruit/nectar-based foods |
| Reproduction | Parthenogenetic — females reproduce without males |
| Sex ratio in captivity | Almost entirely female; males rare and usually infertile |
| Activity pattern | Cathemeral (active day and night, most active at dusk) |
| UVB required? | Low-output beneficial; not strictly required |
| Care level | Beginner |
Parthenogenesis — How It Works
Parthenogenesis in mourning geckos is obligate — meaning the entire species reproduces this way as standard rather than as an occasional alternative to sexual reproduction. Every egg a female lays develops into a viable gecko without fertilisation. The offspring are not identical clones in the strict genetic sense; the process involves a form of chromosomal recombination during egg formation that maintains genetic variability within the population. However, all offspring are female and share the same ploidy characteristics as the mother.
Males do exist within Lepidodactylus lugubris populations but are extremely rare — estimated at less than 1 in 1,000 individuals in wild populations — and are typically infertile. In captivity you are extremely unlikely to encounter a male. The practical implication is that a mourning gecko vivarium will produce eggs and offspring continuously from sexually mature females, with no management input from you and no males required.
This means population management is a real consideration for group setups. A trio of mourning geckos in a 12×12×18 inch vivarium will produce eggs regularly from around 8 months of age, with each female laying roughly two eggs every 4 to 6 weeks. Without removing eggs or managing the group size, a small vivarium can become overpopulated within a year. More on this in the behaviour section.
Appearance
Mourning geckos have the typical compact gecko body plan: triangular head, prominent lidless eyes, adhesive toe pads, and a tail that will autotomise if grabbed. The base colouration is tan to light brown with irregular darker brown or black markings along the back forming a somewhat banded or mottled pattern. The belly is pale and relatively uniform.
Mourning geckos have limited colour-change ability — they can lighten or darken somewhat depending on temperature, activity state, and stress level. A gecko in a cooler, resting state typically appears darker; an active, warm animal will be noticeably paler. This is useful to observe as a health indicator — a gecko that remains persistently dark when it should be active may be unwell or too cold.
Average Size
Adult mourning geckos reach 3 to 4 inches (7–10cm) in total length including the tail. Hatchlings emerge at approximately 1.5 inches. They are among the smaller gecko species available in captivity, which is both a practical advantage (modest enclosure requirements) and a handling consideration — at this size, the risk of escape during any handling interaction is significant.
Lifespan
Mourning geckos live 10 to 15 years in captivity with good care. Well-established groups in appropriate conditions with a varied diet routinely reach the upper end of this range. Longevity is primarily influenced by diet quality, humidity consistency, and the absence of chronic stress from overcrowded conditions.
Mourning Gecko Care
Mourning gecko care is beginner-appropriate. Room-temperature keeping removes the need for complex heating equipment in most homes, they accept commercially prepared gecko diets alongside insects, and their small size makes vivarium maintenance straightforward. The main things to get right are humidity, a well-planted vertical vivarium, and a population management plan from the start.
Enclosure Size
| Setup | Minimum Dimensions | Notes |
|---|---|---|
| Single gecko | 8×8×12 inches | Solitary geckos are shyer and less active than groups |
| Group of 3–5 | 12×12×18 inches | Recommended setup for observing natural behaviour |
| Larger group (6+) | 18×18×24 inches | More space reduces competition; easier egg management |
Height is the priority dimension — mourning geckos are arboreal and spend the majority of their time in the upper two thirds of the enclosure. Front-opening terrariums with adjustable ventilation are the best enclosure type: they allow access without disturbing the group from above, and the ventilation control helps maintain the 60–70% humidity range without creating stagnant air. A tight-fitting secure door or lid is essential — mourning geckos can fit through very small gaps and are fast enough to exit before you notice.
Habitat Setup
A densely planted, vertical vivarium is the ideal setup. Mourning geckos use every surface available — glass walls, cork bark, plant stems, and the underside of leaves — and a well-furnished enclosure will show you behaviours a bare one never will.
Substrate: Coconut coir, a coconut coir and orchid bark mix, or an ABG-style bioactive substrate all work well. A depth of 2 to 3 inches retains humidity and supports live plant roots if going bioactive. Bioactive setups with a drainage layer, live plants, and a microfauna cleanup crew (springtails and isopods) are excellent for mourning geckos — the combination produces a self-maintaining vivarium that stays humid with minimal daily intervention and provides natural foraging stimulation.
Plants: Dense planting throughout the full height of the enclosure. Pothos, bromeliads, Ficus pumila, Peperomia, and small-leaved Ficus species all tolerate the humidity and provide leaf surfaces the geckos actively use for resting, hiding, and drinking from droplets after misting. Bromeliads are particularly appreciated — mourning geckos will often lay eggs within the rolled leaf bases of bromeliad plants.
Cork and climbing: Cork bark panels fixed to the walls, cork tubes, and diagonal branches create the network of surfaces mourning geckos use for movement, basking, and resting. Covering a wall or two entirely with cork bark closely replicates the tree bark surfaces they use in the wild and will be used heavily.
Expert Tip: Mourning geckos lay their eggs in consistent locations — typically tucked into cork bark crevices, bromeliad leaf bases, or behind plant stems against the vivarium wall. Once you identify the regular egg-laying sites in your vivarium, monitoring for new eggs becomes straightforward. If you want to control population growth, remove eggs to a small container with damp substrate (coir or perlite) and either discard them or raise the hatchlings separately. Leaving all eggs in a community vivarium will result in overpopulation within 12 to 18 months.
Temperature and Lighting
| Zone | Temperature | Notes |
|---|---|---|
| Warm/basking area (upper enclosure) | 80–85°F (27–29°C) | Near low-wattage basking lamp at one upper corner |
| Ambient (mid-enclosure) | 72–78°F (22–26°C) | General enclosure temperature; room temp in most homes |
| Cool zone (lower enclosure) | 68–72°F (20–22°C) | Floor level; minimum 65°F (18°C) |
| Night temperature | 65–72°F (18–22°C) | Can drop naturally; no supplemental heat needed if above 65°F |
One of the practical advantages of mourning geckos is that standard room temperature in most homes (68–76°F) is within their comfortable range, meaning a heating setup is often minimal or unnecessary. A low-wattage basking lamp at one upper corner of the enclosure provides a warm zone for thermoregulation without creating a hot environment. A quality thermostat on any heat source prevents overheating in warmer months.
UVB lighting is not strictly required for this species but a low-output 2.0 or 5.0 tube has measurable benefits for calcium metabolism and overall health, and provides the naturalistic photoperiod signal that promotes normal activity patterns. Run on a 12-hour timer. The cathemeral activity pattern of mourning geckos means they will use the light cycle differently from purely nocturnal species — expect some activity during daylight hours as well as the main crepuscular/nocturnal active period.
Humidity
Maintain 60–70% relative humidity. This is a tropical species and insufficient humidity causes poor shedding, dehydration, and reduced breeding activity. Mist the enclosure once daily — ideally in the evening to coincide with the most active period — creating droplets on leaves and glass for the geckos to drink from. A digital hygrometer at mid-enclosure height is the only reliable monitoring method. Bioactive setups with live plants typically maintain the correct range with less daily misting than inert setups.
Water
Mourning geckos drink primarily from water droplets on leaves and vivarium glass after misting, mirroring their behaviour in the wild where dew on foliage is the main water source. Provide a very shallow water dish as a supplementary option — a bottle cap or small shallow lid is sufficient. At 3 to 4 inches long, even a small dish poses a drowning risk if too deep. Change the water daily and clean the dish when the geckos use it as a toilet, which they will.
Feeding and Diet
Mourning geckos are omnivores in the wild, consuming small insects, soft invertebrates, nectar, ripe fruit, and plant sap. In captivity a combination of commercial gecko diet and live insects provides the best nutritional outcomes and keeps feeding interest high.
| Category | Good Options | Notes |
|---|---|---|
| Commercial gecko diet (staple) | Pangea Fruit Mix, Repashy Crested Gecko Diet, Clarks diet | Provides balanced nutrition including fruit/nectar component; 3–4x per week |
| Live insects (staple) | Pinhead crickets, fruit flies (Drosophila hydei), small dubia roaches | Stimulates natural hunting behaviour; 2–3x per week |
| Prey sizing | No larger than width of gecko’s head | At 3–4 inches total length, prey must be very small |
| Supplement dusting | Calcium powder (without D3 with UVB; with D3 without UVB) | Dust live insects every other feeding |
| Avoid | Wild-caught insects, citrus fruit, large prey items | Wild insects carry pesticide and parasite risk |
Offer commercial gecko diet in a small shallow dish 3 to 4 times per week, replacing uneaten diet every 24 to 48 hours before it spoils. Offer live insects 2 to 3 times per week in addition to the prepared diet, not instead of it — the combination of both provides better nutritional completeness than either alone. A 2-day fast period per week, as suggested in some care guides, is not necessary for healthy adults but will not harm them if you prefer a simpler schedule.
Common Health Issues
Metabolic bone disease (MBD) — caused by calcium deficiency and/or insufficient UVB. Signs include jaw softening, difficulty climbing, lethargy, and limb trembling. Entirely preventable with correct calcium supplementation on feeder insects and a low-output UVB tube. MBD in a 3-inch gecko progresses rapidly and is difficult to reverse once established.
Incomplete shedding — caused by humidity consistently too low. Mourning geckos shed in sections and retained shed on the toes is the most common problem at this size, constricting circulation and causing toe loss if not resolved. A 10-minute warm misting or placing damp sphagnum moss in the enclosure for 24 hours resolves most cases. Maintaining 60–70% humidity prevents most incomplete sheds.
Respiratory infections — caused by temperatures too cool or high humidity with poor ventilation. Signs include open-mouth breathing, mucus around the nostrils, and lethargy. Requires veterinary antibiotic treatment.
Overcrowding stress — the most common husbandry issue specific to mourning geckos. An overpopulated vivarium produces chronic competition for food and territory, suppressed immune function, weight loss in subordinate animals, and reduced reproductive health. Monitor the group size and manage egg production before the vivarium becomes overcrowded. Find a reptile vet through the ARAV vet directory.
Behaviour and Temperament
Mourning geckos kept in groups are noticeably more active, vocal, and interesting to observe than solitary animals. They communicate with a range of vocalisations — squeaks, chirps, and clicks — that are most audible in the evening when activity peaks. Social interactions including territorial displays, feeding competition, and group basking are all observable in a well-set-up community vivarium.
Aggression within all-female groups is generally mild — occasional chasing and posturing over preferred basking spots — and rarely results in serious injury. Animals that are consistently outcompeted for food or territory may lose weight; monitor individual body condition if you keep a larger group and ensure multiple feeding sites so subordinate animals can access food without direct competition.
Egg-laying and population management: Females reach sexual maturity at around 8 months and begin laying two eggs every 4 to 6 weeks from that point, continuing indefinitely. Eggs are sticky and are typically glued to cork bark, inside bromeliad bases, or against the vivarium wall. In a group of five females at peak reproductive activity, this produces 10 to 15 eggs per month. Hatchlings emerge in 60 to 90 days at the temperatures described above and are miniature versions of the adults, fully capable of feeding on fruit flies and micro-crickets immediately. Without active population management, a vivarium will become overcrowded within one to two years. Mourning geckos that cannot be housed are increasingly available from keepers rehoming excess animals — finding responsible homes for excess hatchlings is part of keeping this species responsibly.
Handling
Mourning geckos do not suit regular handling. At 3 to 4 inches and extremely fast, they escape easily during any handling attempt, and the stress of being caught and held is significant for such a small animal. The risk of escape into the home — where finding a 3-inch gecko is genuinely difficult — is also real. Limit handling to what is necessary for vivarium maintenance and health checks. For keepers who want a gecko they can handle regularly, the crested gecko or gargoyle gecko are much better suited. Mourning geckos reward observation rather than interaction.
Price and Where to Buy
Mourning geckos typically sell for $20–$50 per animal, though prices vary by group size and source. Because of their parthenogenetic reproduction, captive populations are well-established and surplus animals are frequently available from keepers at low cost or free. Reptile expos, gecko-specific Facebook groups, and dedicated gecko breeder listings are good sources. Many keepers with established groups will rehome surplus hatchlings — asking in these communities before buying from a retailer often results in well-established animals from proven stock.
Frequently Asked Questions
Are mourning geckos good pets for beginners?
Yes. Mourning geckos are genuinely beginner-appropriate — small, easy to house, undemanding in temperature requirements, and fascinating to observe in groups. The main consideration for beginners is population management: these geckos reproduce parthenogenetically and continuously from around 8 months of age, so having a plan for managing egg production before it leads to an overcrowded vivarium is important before setting up a group.
How do mourning geckos reproduce without males?
Mourning geckos are parthenogenetic — females reproduce asexually without fertilisation. Each egg develops into a viable female gecko through a chromosomal process that maintains some genetic variability while producing entirely female offspring. Males exist within wild populations but are extremely rare (estimated less than 1 in 1,000 individuals) and are typically infertile. In captivity you will almost certainly never encounter a male. Each female lays approximately two eggs every 4 to 6 weeks from around 8 months of age.
How big do mourning geckos get?
Adults reach 3 to 4 inches (7 to 10cm) in total length including the tail. Hatchlings emerge at approximately 1.5 inches. They are among the smaller gecko species in captivity, which means enclosure requirements are modest but also that handling risk is significant — at this size they escape very easily and can be difficult to locate if lost in a room.
How many mourning geckos should I keep together?
Groups of 3 to 6 females work well in a 12 by 12 by 18 inch enclosure. Solitary mourning geckos are shyer and less active than grouped animals. Larger groups are possible in larger enclosures but require active egg management to prevent overcrowding. Never house two males together — males are extremely rare but territorial with each other. All-female groups are the standard captive setup.
What do mourning geckos eat?
Mourning geckos are omnivores eating a combination of commercial crested gecko diet (Pangea, Repashy, or similar) and live insects. Offer prepared diet 3 to 4 times per week and live pinhead crickets or fruit flies 2 to 3 times per week. Dust live insects with calcium supplement at every other feeding. Prey must be no larger than the width of the gecko’s head.
Will mourning geckos overpopulate my vivarium?
Yes, without active management. Females lay approximately two eggs every 4 to 6 weeks from around 8 months of age and continue indefinitely. In a group of five females this produces 10 to 15 eggs per month. Hatchlings emerge after 60 to 90 days. Without removing eggs or managing group size, a vivarium will become overcrowded within one to two years. Monitor egg-laying sites and remove eggs to a separate container if you do not want additional geckos. Many keepers rehome excess hatchlings through gecko communities and reptile expos.
References
- Radtkey, R.R., Donnellan, S.C., Fisher, R.N., Moritz, C., Hanley, K.A. & Case, T.J. (1995). When species collide: the origin and spread of an asexual species of gecko. Proceedings of the Royal Society B, 259(1355), 145–152. — Key research on the parthenogenetic origin and spread of Lepidodactylus lugubris, documenting the chromosomal basis of asexual reproduction and population genetics across the Pacific range.
- Zug, G.R. & Zug, P.B. (1979). The marine toad, Bufo marinus: a natural history resumé of native populations. Smithsonian Contributions to Zoology 284. — Referenced for comparative Pacific island herpetofauna ecology in the context of L. lugubris range expansion.
- Merck Veterinary Manual. Management and Husbandry of Reptiles. merckvetmanual.com
- American Association of Reptile and Amphibian Veterinarians (ARAV). Find a Reptile Vet. arav.org
