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Hong Kong Wetland Park
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The keeled bellied water snake is endemic to the Andaman coasts of Thailand and Myanmar and it may be present on the Sunda Shelf. It is known from relatively few specimens. It feeds of gobies and has some unusual morphology including keeled ventral scales, dorsal scales with exposed skin, and the general appearance of a true sea snake - which it may mimic.
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The rostral tentacles of Erpeton tentaculatus are unique in snakes.
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The Pakistani Mud Snake is a homalopsid snake restricted to the Indus River of Pakistan. This is a highly derived species with an exceptionally long tail, and very narrow ventral scales, suggesting that it rarely leaves the water.
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Linne's Masked Watersnake inhabits the Indonesian Archipelago and adjacent mainland tropical Asia.
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A homalopsid snake endemic to the Chao Phrya drainage in Thailand, from metropolitan Bangkok.
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The homalopsid snake Enhydris maculosa, endemic to the Ayeyarwady River delta
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Richardson's Mangrove Snake, Myron richardsonii, is found in northern Australia and southern New Guinea. It is known to feed on fish and gastropods (nudibranchs). Specimen in photo from the vicinity of Darwin, NT.
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A homalopsid snake endemic to West Papua, New Guinea. The photos are of the holotype.
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Cantor's Mud Snake, is a coastal homalopsid that forages for pistol shrimp on mud flats and in mangroves. It is convergent with the true sea snakes in its general appearance.
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Gerard's water snake, Gerarda prevostiana , is widespread in mangrove habitats from India and Sri Lanka to the Philippines. It feeds on newly molted crabs, and is known to pull its prey apart before swallowing (very unusual behavior for a snake). It is associated with the intertidal burrow system and mud lobster mounds.
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Mae Tha, Lampang, Thailand
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Jack's masked water snake, Homalopsis mereljcoxi, is found in the lowlands of the Indochinese Peninsula and southern Thailand. It feeds on fish and is hunted for its skins. Specimen from the Khorat basin, Thailand
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The Selangor mud snake, Enhydris indica, is a poorly known species from peninsular Malaysia.
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Mekong mud snake, Enhydris subtaeniata, was long confused with Enhydris enhydris and E. jagorii. It is relatively widespread in the Mekong drainage and at some localities is almost as abundant as the rainbow mud snake, E. enhydris. Specimen from Khorat basin, Thailand
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The Lake Buhi Bockadam, a species of Cerberus restricted to a small freshwater lake on the island of Luzon, Philippines
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Resetar's mangrove snake, Myron resetari, inhabits to coastal of Australia from Broom to the Kimberlys. it is known from relatively few specimens.
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Karn's Mangrove snake, Myron karnsi, is a melanistic species from the Aru Islands of Indonesia and is known only from the holotype.
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A map showing trhe distribution of five species of Cerberus, a group of snakes commonly called bockadams.
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Bocourt's Mud Snake is a heavy bodied, freshwater homalopsid snake found in the Indochinese Peninsula, Thailand, and Malaysia. Because of its large size it is collected for its skins. The snake in the photograph is a juvenile
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Doriae's mud snake, Enhydris doriae is endemic to Borneo.
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External morphology used to identify Homalopsis semizonata
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Jagor's mud snake is a Thailand endemic, with only one known extant population. The species was long confused with Enhydris subtaeniata. It is closely related to E. longicauda and E. innominata.
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Dunson's Bockadam is a species of Cerberus restricted to the Micronesian islands of Paula.