reptile

Mourning Gecko

Lepidodactylus lugubris

The mourning gecko's defining biological trait sets it apart from every other gecko on this site: the species is entirely parthenogenetic, meaning every mourning gecko in the pet trade is female, and reproduces by producing genetically identical clones of herself without any male or fertilization involved at all. This isn't a rare occasional trick some individuals can perform — it's the species' only reproductive mode, believed to have arisen from an ancient hybridization event between two related gecko lineages that left the resulting triploid population able to self-clone rather than requiring sexual reproduction, and it's part of why this species spread so successfully as a stowaway across Pacific islands and beyond: a single gecko accidentally transported in a cargo shipment can found an entire new population on her own. That same biology makes this one of the easiest geckos in the hobby to unintentionally overbreed, since literally any adult female housed alone will eventually lay fertile eggs without a mate present, and keepers who want to cap a colony's size need to actively manage egg removal rather than assume breeding won't happen without a male. The other defining trait is genuine sociability: unlike almost every other pet-trade gecko, which is typically kept solitary due to territorial aggression, mourning geckos are naturally communal and do well in small same-enclosure groups, chirping to each other and sharing basking and feeding spots without the fighting that would occur if a leopard gecko, crested gecko, or gargoyle gecko were housed the same way. At just 3-4 inches, this is also one of the smallest and least expensive-to-house geckos commonly kept, and its combination of tiny size, communal behavior, and genuine visual interest has made it a popular choice specifically for small bioactive planted vivarium displays, where a little colony can be observed foraging and climbing across live plants in a way a solitary, more territorial gecko species can't replicate.

Husbandry

Enclosure size

A well-planted vertical enclosure of at least 12x12x18in (30x30x45cm) suits a small colony of 3-5 adults, given this species' communal nature and small individual size — considerably more gecko-per-gallon than a solitary species would tolerate

Source: Association of Reptilian and Amphibian Veterinarians (ARAV) husbandry guidance (checked 2026-07-13)

Temperature gradient

Ambient 75-85°F (24-29°C) with a modest basking area around 88°F (31°C); nighttime drop to 70-75°F (21-24°C) reflects this species' tropical Indo-Pacific origin

Source: Merck Veterinary Manual — Reptile Husbandry (checked 2026-07-13)

Humidity

70-80% ambient with daily misting, higher than most desert or Mediterranean-climate geckos need, reflecting this species' tropical forest and coastal-vegetation habitat

Source: Merck Veterinary Manual — Reptile Husbandry (checked 2026-07-13)

UVB lighting

Low-level UVB (2-6%) is increasingly recommended for this partly crepuscular, partly nocturnal species, mirroring the same evolving practice applied to other small nocturnal geckos on this site

Source: UVGuide UK (checked 2026-07-13)

Diet

A commercial powdered gecko nectar/fruit diet mixed with water as the dietary staple, supplemented with small gut-loaded insects (fruit flies, pinhead crickets) sized to this gecko's small mouth, offered every 1-2 days

Source: ARAV husbandry guidance (checked 2026-07-13)

Supplementation

A light calcium dusting on live insect feedings, with most nutritional supplementation already built into a quality commercial nectar-based gecko diet rather than needing a separate heavy dusting regimen

Source: ARAV husbandry guidance (checked 2026-07-13)

Cohabitation

Naturally communal and typically the easiest gecko on this site to house in groups — small colonies of several adults coexist peacefully, but because every individual is a reproductively capable female, egg-laying and population growth need active management to avoid overcrowding a fixed enclosure over time

Source: Merck Veterinary Manual — Reptile Husbandry (checked 2026-07-13)

Substrate

A moisture-retentive bioactive substrate blend (coco fiber, sphagnum, leaf litter) suits this species particularly well given how commonly it's kept in planted display setups, though paper towel works for a simpler, non-bioactive enclosure

Source: ARAV husbandry guidance (checked 2026-07-13)

Handling

Mourning geckos are not a handling-oriented species, and this is a genuine biological caution rather than a generic small-gecko disclaimer — like many arboreal geckos they drop their tails readily under stress (the regrown tail looks visually different afterward), and their small size and speed make them easy to injure or lose in a room if handling is attempted. This species is best kept and enjoyed as an observation and display animal: watching a small communal group forage across live plants, chirp socially to each other, and interact without the territorial aggression almost every other pet-trade gecko would show in the same setup is the actual appeal, and it's a genuinely different, lower-intervention keeping style than a solitary, more handleable gecko like a leopard or crested gecko offers. When handling is necessary for a health check or enclosure transfer, a cupped-hands or small-container transfer method avoids the grip-and-pull contact that triggers tail-drop.

Signs of good health

• Bright, clear eyes with normal blinking and no cloudiness outside a shed cycle
• Confident climbing and foraging activity across plants and enclosure surfaces after dark and at dusk
• Complete sheds without retained skin on toes or the tail
• Regular, non-aggressive group interaction — persistent chasing or biting between individuals is unusual for this normally communal species and warrants a closer look
• Visible eggs periodically found glued to décor or glass, a normal sign of this species' parthenogenetic reproduction rather than any illness or abnormality

Common problems

14 common reptile problems are tracked for this species; 0 have full guides published so far.

Recommended gear for this taxon

Equipment categories that are genuinely correct for this species' welfare needs — see the full Gear Guide for the complete list.

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