The Indonesian giant sailfin dragon (Hydrosaurus microlophus) is a species of agamid native to South Sulawesi Indonesia.[1] It is the heaviest and longest species of sailfin lizard, making it the largest of all the Agamidae. It is often mistaken for H. amboinensis because of the incorrect information of Hydrosaurus amboinensis being the largest of the sailfin dragons.[2]
H. microlophus is oviparous.