• Onyx Nerite Snail (Neripteron rubicundus)
  • Onyx Nerite Snail (Neripteron rubicundus)
  • Onyx Nerite Snail (Neripteron rubicundus)
  • Onyx Nerite Snail (Neripteron rubicundus)
  • Onyx Nerite Snail (Neripteron rubicundus)
  • Onyx Nerite Snail (Neripteron rubicundus)

Onyx Nerite Snail (Neripteron rubicundus)

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The Onyx Nerite Snail is a very sleek, hardy snail that is an excellent algae eater for the nano or planted aquarium!

The Onyx Nerite Snail (Neripteron rubicundus) is a very rare nerite species that is native to the Philippines and is known for its jet black to tan shell and limpet-like pod shape. Not to be confused with the Black Racer Nerite Snail (Vittina pulligera), it seems to be much hardier and more adaptable to fully freshwater environments.

Most of the nerite snails we offer have very similar care requirements and characteristics, and the Onyx Nerite Snail is no exception.  It inhabits fresh and brackish water areas and cannot reproduce in freshwater. This snail is a very effective algae eater and will thrive in a mature aquarium that has plenty of algae and biofilm growth. Some nerite snails are initially finicky about eating dry foods, but most will come to accept them, especially with foods that are high in spirulina or other plant content. Fresh vegetables are typically accepted as well. Nerite snails are hardy in a mature, stable, well-maintained aquarium, but they are not as hardy as some other snail species in subpar setups. It is important to remember that scavengers such as snails do not consume as much oxygen as most fish, but they still contribute to the bioload of the aquarium and they should not be overstocked long-term.  

It should also be noted that, while this snail can live in a wide variety of pH levels, it will live for much longer in alkaline water of over 7.0 pH. If it is kept in acidic water, it is more prone to experience shell erosion. Calcium supplementation (especially when using R/O water) is highly recommended for maintaining the quality of this snail’s magnificent shell.

What We Like About This Snail:

  • Completely peaceful
  • Striking black to tan shell
  • Safe with all plants
  • Excellent scavenger and algae eater
  • Does not reproduce in freshwater


  • Temperature: 71.6° - 82.4° F (22° - 28° C)
  • pH: 6.5 – 8.0, although its lifespan will generally be longer in alkaline pH.
  • KH: 2 - 12 dKH
  • Minimum Tank Size: 5 gallons


  • Diet: Scavenger that feeds continually.  Requires very little feeding in a well-established aquarium containing algae, biofilm, or decaying plant matter.  In less mature aquariums, high quality dry foods with high plant content can be sparingly fed daily. Nerite snails are often more finicky with dry foods.
  • Warning! Avoid any food product, medication, or plant fertilizer that contains Copper of any form. Copper is toxic to invertebrates. Many commercial fish foods, medications, and plant fertilizers contain copper or more commonly copper sulfate. Always look at the ingredient list for any product going into the aquarium to ensure they are copper free.
  • Social Behavior: Peaceful
  • Origin: Philippines
  • Average Adult Size: 1.2 inches (3 cm)
  • Average Purchase Size: .5 - 1 inches (1.3 – 2.5 cm)
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