Thiaridae
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Thiaridae, common name thiarids or trumpet snails, is a family of tropical freshwater snails with an operculum, aquatic gastropod mollusks in the superfamily Cerithioidea.
Red-rimmed melania
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The red-rimmed melania, also known as Malayan livebearing snails or Malayan/Malaysian trumpet snails by aquarists, is a species of freshwater snail with an operculum, a parthenogenetic, aquatic gastropod mollusk in the family Thiaridae.
Red-rimmed melania shell, with the characteristic red spots and streaks apparent. Specimen length approximately 20 millimetres (3⁄4 in).
Melanoides tuberculata
Variety of Melanoides tuberculata shells, some of them are dark brown or nearly black.