Zebra Nerite, Zebra Neritina
Phylum: Mollusca, Class: Gastropoda, Order: Neritida, Family: Neritidae, Genus: Neritina, Species: Neritina natalensis · Neritidae (Nerite family) · Gastropod (snail/univalve), whole shell, spiral shape
Species
Neritina natalensis
Shell Type
Gastropod (snail/univalve), whole shell, spiral shape
Family
Neritidae (Nerite family)
Size
Approximately 0.5 inches (12-25 mm) in length/diameter, which is average for this species as adults typically range from 0.5 to 1 inch.
Color & Pattern
Striking pattern of bold, zig-zagging or wavy black lines contrasting sharply against a cream, yellowish, or olive-green base color. Colors appear completely natural and vibrant, with a smooth, glossy finish.
Rarity
Common in the aquarium trade, though finding wild specimens depends heavily on geographic location.
Habitat
Found in shallow freshwater streams, rivers, and brackish estuaries, often clinging to hard substrates like rocks, driftwood, and submerged vegetation.
Geographic Range
Native to East Africa, particularly coastal regions of Kenya, Mozambique, Somalia, South Africa, and Tanzania.
Description
A compact, highly polished dome-shaped univalve with a low spire and a spacious, half-moon-shaped aperture. The exterior features mesmerizing, high-contrast zebra-like striping that makes it an exceptionally attractive addition to any small shell collection.
Key Features
Rounded, globular body whorl with a very low spire, smooth glossy texture, and distinctive dark zebra-striped or zigzag patterns over a lighter background.
Collector Value
Moderately low collectible value as wild collector items, but highly valued and widely sold in the aquarium trade. Typically inexpensive, costing only a few dollars each.
Condition Notes
Specimens appear whole, intact, and in fine condition with excellent color preservation and glossy lusters, grading at Fine to Gem quality.
Interesting Facts
These snails are famous freshwater algae eaters popular in the aquarium hobby. Unlike many other freshwater snails, they cannot reproduce in freshwater because their larvae require brackish water to survive.
Ecological Role
Acts as an important grazer in freshwater and estuarine ecosystems, feeding on microalgae and helping to control algal growth on rocks and vegetation.
Similar Species
Neritina pulligera (Black Nerite) and Vittina waigiensis (Red Onion Nerite), which can be distinguished by different color banding patterns and varying base hues.
Beach Finding Tips
Since these are primarily freshwater and estuarine creatures rather than traditional marine beach dwellers, they are rarely found on ocean beaches; instead, search along the muddy or rocky banks of tidal rivers in East Africa.