
Assassin Snail
Anentome helena
- Care level
- Beginner
- Adult size
- 1.5–3 cm
- Minimum tank
- 20 litres
- Temperature
- 20–28 °C
Species profile
Filopaludina martensi
Common names: White Wizard Snail

A large pale trapdoor snail from Southeast Asia that gives birth to live young and grazes biofilm and detritus.
Rounded to conical pale cream, white, grey, or light brown shell with an operculum and contrasting dark soft body.
Filopaludina martensi is a viviparid trapdoor snail, not a nerite or mystery snail. White Wizard is a trade name for pale aquarium stock.
Sexes can sometimes be distinguished by tentacle shape, but identification should be confirmed carefully.
Provide stable water, mineral availability for shell growth, secure décor, and enough natural grazing surface.
Peaceful freshwater snail that spends much of its time grazing or searching for food.
Usually non-territorial and may be kept singly or with compatible conspecifics when food and space are adequate.
Not normally territorial.
Suitable with peaceful tankmates that do not nip, crush, or prey on snails.
Keep in warm, stable, mineral-rich water with good oxygenation. A calcium-rich diet and non-acidic conditions help preserve shell quality.
Omnivorous grazer and detritivore. Provide mature biofilm, algae, vegetables, and complete sinking foods.
Avoid overfeeding; excess food can cause rapid snail population growth and poor water quality.
Separate sexes. Females brood developing young internally and release live juveniles.
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