Turret Nerite care guide
Turret Nerite (Vittina turrita) — minimum tank 20 L, temperature 22-28 °C, pH 7-8.5.
Compiled by Aquairi from published sources · Published · Updated
Overview
Turret Nerite (Vittina turrita) is a nerite snail of the family Neritidae, listed in the Aquairi knowledge base as a beginner-level species. Asian nerite with cream and brown wavy radial pattern that resembles flowing threads. Excellent algae grazer.
Taxonomy
- Family: Neritidae
- Genus: Vittina
- Scientific name: Vittina turrita
- Common synonyms: Sun Thread Nerite
Habitat
Neritid snails inhabit tropical and subtropical coastal streams and estuaries worldwide. Most species require brackish or marine water for larval development, although adults thrive in pure freshwater aquariums and graze algae continuously. In the Aquairi knowledge base this species is recorded 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
The species is a herbivore, grazing algae, biofilm and decaying matter from surfaces and substrate; in aquaria its diet is supplemented with algae wafers and blanched vegetables when natural growth is scarce.
Compatibility
The Aquairi knowledge base lists this species as peaceful. Suitable tank mates include Peaceful fish, Shrimp. It should be kept away from Loaches, Pufferfish.
Breeding
Reproduction is egg-laying, and aquarium breeding is rated very difficult. Larvae require brackish or marine water to develop, so the species rarely overpopulates a freshwater aquarium.
Why the Turret Nerite Snail Won't Breed in Freshwater (Vittina turrita)
Overview
Vittina turrita is a Neritidae nerite from Southeast Asia, with a cream-and-brown wavy radial pattern resembling flowing threads. It is an effective algae grazer that favours hard, alkaline water. Nerites of this group are amphidromous, returning to brackish water to reproduce, so this snail can complete its life cycle only in brackish or salt water and not in an ordinary freshwater aquarium.
Sexing
Vittina turrita has separate sexes and is not hermaphroditic, so a single snail cannot reproduce alone. External sex differences are not reliably visible, so a small group is kept together to ensure both sexes are present.
Conditioning
Hard, alkaline water with abundant algae and adequate minerals keeps adults healthy and prompts them to lay egg capsules. 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. Egg-bearing surfaces are transferred to a brackish or saltwater rearing tank, or adults are acclimated to brackish water, because 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 holding many eggs, but they do not produce viable snails. The larvae cannot develop without brackish or marine water, so the tank population does not increase even though egg capsules keep appearing.
Common Challenges
The hard white egg capsules cling to decor and glass and are difficult to remove, and many keepers find them unsightly. Even with a brackish rearing tank the tiny larvae are notoriously hard to feed, so successful captive breeding is rarely achieved.