Trap Door Snail (Viviparus sp.) – Hardy Livebearing Snail for Freshwater Aquariums & Ponds
The Trap Door Snail is a large, hardy freshwater snail valued for its algae-grazing ability, durability, and unique operculum (“trap door”) that allows it to fully seal itself inside its shell. Unlike many common aquarium snails, Trap Door Snails are livebearers, producing fully formed young rather than laying eggs, making them an interesting and natural addition to freshwater systems.
Peaceful and slow-moving, Trap Door Snails are excellent for established aquariums and outdoor ponds. They are highly tolerant of a wide range of water conditions and temperatures, making them ideal for aquarists seeking a low-maintenance cleanup crew member that won’t overpopulate rapidly.
Easy
Peaceful
1.5–2.5 inches (3.8–6.5 cm)
3–5+ years
Herbivorous / Detritivore – Feeds on algae, biofilm, decaying plant matter, and leftover food; supplement with algae wafers, blanched vegetables (zucchini, spinach), and calcium-rich foods
Minimum 10 gallons
Temperature: 60–78°F (16–26°C)
pH: 7.0–8.2
Hardness: Moderate to hard (calcium-rich water recommended)
Peaceful and non-aggressive
Excellent tank mate for community fish, shrimp, and other snails
Does not eat healthy live plants
Suitable for freshwater aquariums and outdoor ponds
Requires stable, mature aquariums with established biofilm
Trap Door Snails have an operculum that allows them to fully close their shell for protection
Livebearing species; reproduction is slow and manageable
Calcium supplementation is recommended for strong shell growth
Not suitable for newly cycled aquariums due to limited natural food sources
