Hydrosaurus celebensis

The Sulawesi black sailfin lizard (Hydrosaurus celebensis) is a species of agamid native to Indonesia. It is the second largest species of sailfin dragon, with only the Sulawesi giant sailfin dragon being larger. , exceeding 1000 mm in total length, possibly 1200 mm. Head, neck, gular region and shoulder completely black; a row of enlarged flat, sometimes conical scales on either side of the neck; nuchal and dorsal crests continuous; a group of dirty white enlarged flat scales on the anterior part of the dorsum; few (<10) additional enlarged scales approximately at midbody and before the hindlimbs. Dorsal colouration is typically yellowish, sometimes dark orange, interspersed with black spots; ventrally beige, limbs black with a few yellow spots; scales under fourth and fifth toes are broad with several keels from near the base of the toe; tail black, sail black or dark violet with black stripes.

Reproduction
H. celebensis is oviparous.