The flat-tailed day gecko (Phelsuma serraticauda ) is a diurnal gecko lives in eastern Madagascar. It is endangered due to illegal collection for the international pet trade. It typically inhabits rainforests and dwells on trees. The flat-tailed day gecko feeds on insects and nectar.
This lizard can reach an average total length of about 13 cm whereas females are slightly smaller. Some males may even reach a length of 15 cm. The body colour is dark green or yellowish green. Remarkable is the broad, flattened tail with serrated edges. On the lower back three red tear-shaped markings dots are present. On the neck, which may be bluish, two longitudinal yellow stripes are present. On the snout and head, there are three transversal red bars.
This species occurs on the east coast of Madagascar. It is only known from the region 12 km north of Toamasina.
Phelsuma serraticauda is largely restricted to coconut palms yet can also be found on banana trees.
This species lives in groups with one male and up to five females. Amongst the females, there is a well-developed dominance hierarchy. Juveniles are tolerated up to a certain size.
These day geckos feed on various insects and other invertebrates. They also like to lick soft, sweet fruit, pollen and nectar.
The females lay up to 4 pairs of eggs per year. At a temperature of 28 °C, the young will hatch after approximately 53–58 days. The juveniles are typically 40 mm in length.
