Ichthyophis hypocyaneus, the Javan caecilian or marsh caecilian, is a species of amphibian in the family Ichthyophiidae of caecilians, endemic to Java, Indonesia. Until its rediscovery in 2000, it was known only from the 1827 type specimen. Distribution and habitat Ichthyophis hypocyaneus is so far known from four sites on Java Island, Indonesia, and was originally described in Banten in West Java. The species was thought to be extinct but rediscovered through a second observation in Pekalongan. The third sighting of the species was in Bodogol, at the edge of Gunung Gede Pangrango National Park (Kusrini 2007), and the fourth sighting in Gunung Halimun-Salak National Park. Ecology Ichthyophis caecilians are oviparous and present in a broad range of terrestrial microhabitats, ranging from primary forests to plantations. The breeding season overlaps with the rainy season, when Ichthyophis caecilians are usually found in epigeic microhabitats. Egg deposition starts at the onset of the monsoon with metamorphosis taking place before the end of the dry season. References hypocyaneus Amphibians of Indonesia Endemic fauna of Java Taxa named by Johan Conrad van Hasselt Amphibians described in 1827 Taxonomy articles created by Polbot