Back to atlas
ReptileTerrestrialIntermediate

Encyclopaedia

Neon Day Gecko

Phelsuma klemmeri

The yellow-headed neon gecko. Tiny, incredibly flat, and with stunning fluorescent colors (blue, neon green, yellow, and black). Famous among keepers for its surprisingly calm and sociable demeanor compared to other Phelsuma, but demands enclosures that are literally 'escape-proof'.

Family
Gekkonidae
Origin
Madagascar
Origin
Africa and Madagascar
Tank use
Used in 0 tanks

Share

Species challenges
Temperature

22 °C - 28 °C

pH

n/a

Water type

Terrestrial

Basking spot

32 °C

UVB

n/a

Description

Origin and Habitat: A very rare species originating from tiny patches of bamboo forests in northwestern Madagascar. Their habitat and habits are entirely and obsessively dependent on giant yellow bamboo.

Morphology: Incredibly small (maximum 3.5 inches / 9 cm total length) and dorsoventrally flattened like sheets of paper. This flat anatomy allows them to slide into natural vertical cracks in bamboo stalks to hide. Their colors are blinding: highlighter yellow head and neck, bright metallic blue body fading into neon green, with two bold black lateral lines running down the flanks to the tail.

Behavior: They differ radically from other large day geckos for two reasons. First: they are not perpetually skittish or frantic; rather, they tend to stay out in the open watching curiously and do not bolt at the slightest movement. Second: they are highly socially tolerant. They can be kept in small communal groups (one male with multiple females) without the brutal territorial murders typical of Phelsuma grandis, provided there is abundant food and space.

Care and observations

Terrarium: ESCAPE PROOF. Being microscopic and flat, they will squeeze through ventilation holes of a few millimeters, door gaps, and cable grommets. A sealed enclosure (e.g., 18x18x24 inches) designed for dart frogs or insects with extremely fine mesh is required. The setup MUST include a forest of hollow bamboo canes with longitudinal slits cut into the sides, where they will safely sleep and lay their eggs.

Lighting and Temps: Despite their size, they are sun-worshipping heliothermic lizards. A 5.0 (or 6% T5) UVB tube is fundamental, plus a small halogen spot lamp to provide an isolated 90-93°F (32-34°C) basking area on the highest bamboo stalks. Ambient temperature around 77°F (25°C).

Humidity and Water: Less demanding than their relatives, they prefer a well-ventilated tank with humidity spikes (60-70%) created with brief, fine daily misting. They use the droplets to drink. Water bowls are useless and dangerous (drowning risk for neonates).

Diet: Nectar and micro-prey. Given their tiny mouths, they devour fruit flies (Drosophila hydei and melanogaster), pinhead micro-crickets, and silverfish. A substantial part of their diet must include specific sweet powder diets for frugivorous geckos (Pangea/Repashy), which are indispensable for correct vitamin and calcium balance to avoid the terrible MBD (Metabolic Bone Disease).

Reptile profile

Diet
Onnivoro
Humidity
50 % - 70 %
Basking spot
32 °C

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.