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Mountain Nerite Snail
Septaria porcellana
📍 Southeast Asia (Thailand, Laos, Cambodia)
Mountain Nerite Snails are small, hardy freshwater snails with distinctive ridged, bumpy shells that resemble miniature mountains. They are excellent algae eaters and detritivores, making them valuable cleanup crew members in established tanks. These snails are peaceful, low-maintenance, and do not reproduce in freshwater, making them ideal for community aquariums.
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Care Guide
Diet
Mountain Nerite Snails are primarily herbivorous and will graze on algae, biofilm, and decaying plant matter throughout the day. Supplement their diet with algae wafers and blanched vegetables such as zucchini or spinach. Provide calcium-rich foods and ensure adequate calcium in the water column to maintain shell health.
Behavior
These snails are nocturnal grazers that spend most of their time on surfaces consuming algae and biofilm. They are slow-moving and relatively inactive during the day, becoming more active at night. Mountain Nerite Snails are excellent cleanup crew members and will not damage live plants.
Breeding
Mountain Nerite Snails do not breed in freshwater aquariums; they require brackish water for larval development. Females may lay small white egg capsules on hard surfaces, but these will not hatch in freshwater conditions. This makes them an excellent choice for aquarists concerned about snail overpopulation.
Tank Mates
Both are peaceful algae eaters and occupy similar ecological niches without conflict
Non-aggressive scavengers that coexist peacefully with snails
Small, peaceful invertebrates that share the same grazing habits
Small, peaceful fish that ignore snails and occupy different tank zones
Tiny, non-aggressive fish that pose no threat to snails
Peaceful and generally ignore snails, though some individuals may nip at them occasionally
Common Diseases
Shell Erosion / Calcium Deficiency
Pitted, thin, or crumbling shell; visible erosion on shell surface; slow growth
Increase water hardness (GH 8+) through mineral supplements or crushed coral; provide calcium-rich foods; ensure pH is stable and above 7.0; perform regular water changes
Copper Toxicity
Lethargy, withdrawal into shell, loss of appetite, death
Immediately remove snail from copper-containing water; perform large water changes; use copper-free medications and fertilizers; check aquarium treatments for copper content
Parasitic Infections (Flukes/Trematodes)
Excessive mucus production, erratic movement, shell damage, lethargy
Quarantine affected snail; perform frequent water changes; use snail-safe parasite treatments (avoid copper-based medications); maintain optimal water parameters
Bacterial Shell Infection
Discoloration, pitting, or soft spots on shell; foul odor; visible decay
Improve water quality through increased water changes; maintain stable parameters; remove decaying food promptly; ensure adequate calcium availability; consider antibacterial treatments if severe
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Quick Facts
- diet
- Herbivore/detritivore - algae wafers, biofilm, soft algae, blanched vegetables (zucchini, spinach), decaying plant matter
- lifespan
- 3-5 years
- max size
- 1.3 cm (0.5 in)
- tank size
- 5 gallons minimum
- temperament
- peaceful
Water it likes
- ph
- 7.0-8.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 8-18 dGH
- temperature
- 72–82°F (22–28°C)