Description
Black Helmet Snail (Neritina pulligera)
Overview
The Black Helmet Snail is a hardy, attractive freshwater Nerite species known for its smooth, dark shell that resembles a polished helmet. Highly valued for its exceptional algae-eating abilities, it is one of the best natural cleaners for freshwater aquariums and will not reproduce in freshwater.
Origin
Widely distributed across Southeast Asia and the Indo-Pacific, inhabiting clean rivers, streams, and brackish estuaries.
Feeding
A dedicated algae grazer. Consumes:
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Soft film algae
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Diatoms
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Green spot algae
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Biofilm
Supplement with algae wafers or blanched vegetables if the tank is very clean.
Tank Mates
Extremely peaceful and compatible with:
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Tetras, rasboras, danios
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Corydoras & peaceful catfish
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Livebearers
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Shrimp
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Most community fish
Avoid: Loaches, puffers, large cichlids, or any fish known to nip at or eat snails.
Aggression
None. This is a completely peaceful, plant-safe species.
Experience Level
Beginner-friendly. Very hardy and low-maintenance.
Water Parameters
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Temperature: 72–82°F (22–28°C)
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pH: 7.2–8.5 (alkaline preferred to protect the shell)
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Hardness: 8–20 dGH
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Notes: Requires a tight lid—excellent climbers. Supplement calcium to maintain strong shell quality.
The Black Helmet Snail (Neritina pulligera) is an efficient, attractive, and safe addition to any peaceful freshwater aquarium setup.





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