Taxonomy and identification
Vittina is a genus of nerite snails in the family Neritidae. “Midnight Lady” is a trade name rather than a formal scientific species name, so the exact species and locality should not be assumed. The pictured form has a dark shell with orange to yellow spots, dashes, and irregular markings. Shell pattern varies among individuals and may overlap with other Vittina and related nerite forms.

Natural habitat
Vittina nerites are associated with shallow, oxygenated waters and margins influenced by rivers, streams, estuaries, or coastal habitats in tropical regions. They commonly graze on hard surfaces such as rocks, wood, and submerged vegetation. In an aquarium, provide mature surfaces, gentle to moderate circulation, secure cover, and access to both submerged and near-surface areas.
Water parameters
Maintain stable, well-oxygenated water at 22–28 °C and pH 7.0–8.2. Moderate alkalinity and mineral content help support shell growth; very soft, acidic water can erode the shell. Ammonia and nitrite should remain at zero, and nitrate should be kept low through regular maintenance. Acclimate slowly, because sudden changes in conductivity or pH can cause stress.
Feeding
The main food is naturally growing algae and biofilm on aquarium surfaces. In a new or very clean aquarium, supplement with algae wafers or other suitable sinking foods, and offer blanched vegetables such as courgette or leafy greens if accepted. Remove uneaten food promptly. Do not rely on the snail to live on nuisance algae alone when the tank has few mature surfaces.
Plant safety and tank mates
This type of nerite is generally plant-safe and normally scrapes algae and biofilm from surfaces rather than eating healthy leaves. It may feed on weakened or decomposing plant tissue. Keep it with peaceful community fish and invertebrates. Avoid predatory fish, loaches, pufferfish, and other animals known to attack snails.
Reproduction
Vittina nerites have separate sexes and require mating between a male and female. Females may attach small, hard, pale egg capsules to glass, wood, rocks, or equipment. Eggs commonly hatch only when larvae receive suitable brackish or marine conditions and specialized food; they do not normally develop into juveniles in ordinary freshwater aquariums. Egg capsules can therefore appear without producing a freshwater population.
Population control
Freshwater aquariums usually control Vittina numbers naturally because larval development is difficult without brackish or marine rearing conditions. Control feeding so excess food does not accumulate, remove unwanted adults by hand, and scrape egg capsules from decor or equipment if their appearance is undesirable. Never release aquarium snails or eggs into natural waterways. Avoid copper-based treatments, which are hazardous to invertebrates and can contaminate the aquarium.
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