turquoise dwarf gecko
Lygodactylus williamsi is a critically endangered species of lizard, endemic to a small area of Tanzania. Common names include turquoise dwarf gecko, William’s dwarf gecko, or, in the pet trade, electric blue gecko.
Males are bright blue with heavy black throat stripes, visible preanal pores, and hemipenile bulges. The females range from brown or bronze to bright green, and have little to no black on their throat. Females can easily be confused with juvenile or socially suppressed males that are also green, sometimes with a bluish cast. The underside of both sexes is orange. Colours of individuals vary according to mood and temperature. Males may range from black or gray to brilliant electric blue. Females may range from dark brown to brilliant green with turquoise highlights. Adult snout-vent length is 5 to 8 cm (2.0 to 3.1 in).