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The red-rimmed melania, scientific name ''Melanoides tuberculata'',〔〔 is a species of freshwater snail with an operculum, a parthenogenetic, aquatic gastropod mollusk in the family Thiaridae. The common name comes from the presence of reddish spots on the otherwise greenish-brown shell. The species name is sometimes spelled ''Melanoides tuberculatus'', but this is incorrect because ''Melanoides'' Olivier, 1804 was clearly intended to be feminine because it was combined with the feminine specific epithet ''fasciolata'' in the original description.〔〔 ("Genus: ''Melanoides''" ). ''Molluscs of central Europe'', accessed 19 April 2011.〕 This species is native to northern Africa and southern Asia, but it has been accidentally introduced in many other tropical and subtropical areas worldwide. It has also been accidentally introduced to heated aquaria in colder parts of the world. == Shell description == This species has an elongate, conical shell, which is usually light brown, marked with rust-colored spots.〔 An operculum is present.〔 The average shell length is about 20–27 mm〔Glöer P. (2002). ''Die Süßwassergastropoden Nord- und Mitteleuropas''. Die Tierwelt Deutschlands, ConchBooks, Hackenheim, 326 pp., ISBN 3-925919-60-0, page 74.〕 or 30–36 mm, but exceptional specimens may be up to 80 mm long.〔 Shells of this species have 10–15 whorls.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Red-rimmed melania」の詳細全文を読む スポンサード リンク
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