Opisthotropis kuatunensis (Pope, 1928)
Striped Stream Snake 挂墩後稜蛇
(Non-venomous)
Opisthotropis kuatunensis
Order
Suborder		 Squamata 有鱗目
Serpentes 蛇亞目
Family Colubridae 游蛇科
Genus Opisthotropis 後稜蛇屬
Species Opisthotropis kuatunensis
Other name -
Chinese name 挂墩后棱蛇 (「后」為繁簡體誤譯，正確為「後」)
Total length Average 35 - 48 cm, can reach 68 cm; Females larger than males
Description Back light brown, with three blackish stripes, which are more evident in young snakes.
Old individuals dull brown on top, with faint stripes.
Labials and ventral scales dull-to-bright yellow, occasionally with a few brown dots.
Labials sometimes flushed with pink.
The only Hong Kong snake with as many as 11-16 upper labials, of which the last 4-5 are often horizontally divided.
Nostrils on top of snout. Scales very strongly keeled, forming noticeable ridges on back and flanks.
Habitat

Totally aquatic. Inhabits pools of moderate to swift flowing forested mountain streams.
In Hong Kong occurs in both large and small streams between 150 m and 825 m.
Shares habitat with Big-headed Terrapin (Platysternon megacephalum), Leaf Litter Toad (Leptolalax liui), Chinese Waterside Skink (Tropidophorus sinicus) and Anderson's Stream Snake (Opisthotropis andersonii).
Behaviour Strictly nocturnal. Hiding under rocks and stones in stream beds during daytime.
A timid, inoffensive snake, does not attempt to bite when caught, but may defecate and produce pungent smell in self-defense like other Opisthotropis species.
Diet In captivity feeds on small tadpoles and fish.
Reproduction Little is known of its breeding habits. Lays up to 6 eggs.
Distribution First recorded from Shek Kong catchwater in 1974.
Is now also known from several localities in central New Territories and on Lantau Island.
Widely distributed in southern China, but apparently not in Guangdong.
Conservation Status IUCN Redlist: NE (Not Evaluated)
Opisthotropis kuatunensis Opisthotropis kuatunensis Opisthotropis kuatunensis
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