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Scaly Nerite Snail
Scaly Nerite Snail (scientific name:Nerita histrio Linnaeus,1758) or also known as Siput Timba,Tekuyung Timba,Sihik (Malay) ,ชื่อสามัญภาษาไทย: หอยน้ำ (H̄oyn̂ả) (Thai) ,花圆蜑螺 (Huā yuán dànluó), 圆蜑螺 (Yuán dànluó) (Chinese) is a genus of medium-sized to small sea snails with a gill and an operculum, marine gastropod molluscs in the subfamily Neritinae of the family Neritidae, the nerites.

Distribution and habitat
This species can be found on some of our rocky shores or any structure at nearby shores.The study by Tan & Clements (2008) found this snail on mangrove tree trunks and stilt roots; muddy rocks at coastal fringes of mangroves; among rocky rubble along edge of muddy sand flats; on breakwater rocks. Sites included: Sarimbun, Pulau Ubin, Pasir Ris, Sungei Loyang, Changi, Kallang Basin, Marina South, Sentosa, St. John's Island, Pulau Hantu, Tuas, Pantai Lurus Senggarang, Pantai Punggur Johor.

Identification Features
1.5-2.5cm. Shell thick heavy, hemispherical, the spire doesn't stick out and may be depressed. Thick, spiralling ribs, which are uneven and much rougher than other kinds of nerites often with tiny or large horizontal ridges across the ribs. Shell colour and patterns highly variable. The flat underside is white, may be smooth or wrinkled. Tiny notched 'teeth' (2-4) on the straight edge at the shell opening. Young snails often have an orange stain on these tiny 'teeth'. Lacks 'tooth' the sides of the shell opening. Operculum thick, evenly covered in tiny bumps, pinkish sometimes with darkish blotches. Body pale with fine black bands on the foot and long thin black tentacles.Shell colour and markings are variable.

Trivia
1.There is a confusion between Nerita Histrio Linnaeus and Nerita Squamulata because of the same information between these two.

2.You can eat this animal by hitting on its mouth,then boil with salt and lemongrass and the way you eat its flesh is by poke the flesh out of its shells using needle or skewers.