Tiger Nerite Snail care guide
Tiger Nerite Snail (Neritina turrita) — minimum tank 20 L, temperature 22-28 °C, pH 7-8.5.
Compiled by Aquairi from published sources · Published · Updated
Overview
Tiger Nerite Snail (Neritina turrita) is a freshwater (or brackish) snail of the family Neritidae, listed in the Aquairi knowledge base as a beginner-level species. Nerite with golden-orange shell with dark zebra-like stripes resembling a tiger. Excellent algae grazer.
Taxonomy
- Family: Neritidae
- Genus: Neritina
- Scientific name: Neritina turrita
- Common synonyms: Tiger Nerite
Habitat
Neritid snails inhabit tropical and subtropical coastal streams and estuaries worldwide, from East Africa and the Indo-Pacific to the Caribbean. Most species require brackish or marine water for larval development, although adults thrive in pure freshwater aquariums. The Aquairi knowledge base records this entry from: Southeast Asia.
Tank requirements
- Minimum tank volume: 20 L (5.3 US gal)
- Adult size: 2-3 cm
- Temperature: 22-28 °C (72-82 °F)
- pH: 7-8.5
- GH: 6-18 °dGH
- KH: 4-12 °dKH
- Lifespan: 1-2 years
Diet
A herbivorous grazer. Diet consists almost entirely of biofilm and soft algae rasped from solid surfaces. In the aquarium no supplementary feeding is needed in a mature tank; in nutrient-poor systems, occasional blanched spinach, zucchini or algae wafers supplement intake.
Compatibility
Peaceful algae-grazing snail that does not damage live plants and ignores tank mates of any size. Suitable tank mates listed in the Aquairi knowledge base: Most peaceful fish, Shrimp. Should be kept away from: Loaches, Pufferfish, Crayfish.
Breeding
Sexual reproduction with an obligatory salt or brackish larval phase. Females release planktonic larvae that develop only in higher-salinity water and metamorphose into the juvenile stage there before migrating back upstream. As a result, the species essentially does not reproduce in pure freshwater aquariums; eggs may be laid on hardscape, but the larvae cannot complete development.
Why the Tiger Nerite Snail Won't Breed in Freshwater (Neritina turrita)
Overview
The tiger nerite, Neritina turrita, is a Neritidae snail from Southeast Asia, recognised by a golden-orange shell crossed by dark stripes. It is an effective algae grazer that does best in hard, alkaline water. Like other nerites it has an amphidromous life cycle that depends on brackish or salt water for larval development, so it does not reproduce in a freshwater aquarium.
Sexing
Tiger nerites have separate sexes and are not hermaphroditic, so a lone snail cannot multiply. External sex differences are not reliably visible, so keeping several snails together is the usual way to ensure both sexes are present.
Conditioning
Hard, alkaline water with plentiful algae and adequate minerals keeps adults in good condition and prompts egg-laying. Conditioning alone does not lead to reproduction, however, because the larvae still require brackish or marine salinity to develop.
Breeding Setup
Completing the cycle requires moving the larval stage into brackish or saltwater conditions. In practice the egg-bearing surfaces are transferred to a brackish or saltwater rearing tank, or adults are acclimated to brackish water, since the veliger larvae need that salinity and specific gravity to develop into juveniles.
Why It Won't Breed in Freshwater
In freshwater the female lays hard, white egg capsules on surfaces, each containing many eggs, but they do not yield viable snails. The larvae cannot complete development without brackish or marine water, so the tank population does not grow even though egg capsules appear regularly.
Common Challenges
The hard white egg capsules adhere stubbornly to decor and glass and are widely regarded as unsightly. Even in a brackish rearing tank the microscopic larvae are very hard to feed, so successful captive rearing is rarely achieved.