''Vittina waigiensis'', commonly known as the red racer nerite or the gold racer nerite, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of a

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...

brackish water Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estua ...

, or

marine snail A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastrop ...

native to the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

and

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

(

Sulawesi Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Ar ...

and the

Maluku Islands The Maluku Islands (; Indonesian: ''Kepulauan Maluku'') or the Moluccas () are an archipelago in the east of Indonesia. Tectonically they are located on the Halmahera Plate within the Molucca Sea Collision Zone. Geographically they are located eas ...

). It belongs to the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Neritidae Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum. MolluscaBase eds. (2021). MolluscaBase. Neritininae Poey, 1852. Accessed through: ...

. Red racer nerites have colorful shells that display extremely variable patterns, which makes them popular in the

aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...

trade.

Description

Red racer nerites are small snails that only grow to a maximum diameter of . They have shells that have highly variable patterns in red, orange, yellow, black, and white. The patterns often form bands of repeating "arrows" resembling

racing stripe Racing stripes, also called Le Mans stripes or rally stripes, were originally applied to racecars to help identify them in the field during races. The term "racing stripe" is also used to refer to diagonal lines painted on watercraft hulls, usua ...

s, which is the source of their common name "racer." Red racer snails are amphibious and occasionally venture above the waterline. They can tolerate

, and

saltwater Saline water (more commonly known as salt water) is water that contains a high concentration of dissolved salts (mainly sodium chloride). On the United States Geological Survey (USGS) salinity scale, saline water is saltier than brackish water, ...

habitats. They are usually found in bodies of water with dense vegetation in coastal areas, like

mangrove forest Mangrove forests, also called mangrove swamps, mangrove thickets or mangals, are productive wetlands that occur in coastal intertidal zones. Mangrove forests grow mainly at tropical and subtropical latitudes because mangroves cannot withstand fr ...

s and

river delta A river delta is a landform shaped like a triangle, created by deposition (geology), deposition of sediment that is carried by a river and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, res ...

s. They primarily eat

algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...

and

biofilm A biofilm comprises any syntrophic consortium of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular ...

. They lay eggs in clutches of 50 to 100 eggs. Their

plankton Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankt ...

larva A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The ...

e can only survive in brackish water. They are relatively long-lived, with a lifespan usually reaching 4 years. These characteristics and their colorful shells make them popular in the

trade. File:Red racer nerite, Vittina waigiensis from the Philippines 01.jpg, ''Vittina waigiensis'' in comparison to a human hand File:Vittina waigiensis shell.png, Apertural view of a shell of ''Vittina waigiensis''. Scale bar is . File:Vittina waigiensis shell 2.png, Abapertural view of a shell of ''Vittina waigiensis''. Scale bar is . File:Naturalis Biodiversity Center - ZMA.MOLL.314904 - Vittina waigiensis (Lesson, 1831) - Neritidae - Mollusc shell.jpeg, ''Vittina waigiensis'' shells and opercula File:Red racer nerite, Vittina waigiensis from the Philippines 07.jpg, ''Vittina waigiensis'' feeding on algae

Human use

''Vittina waigiensis'' is a part of ornamental

pet trade Wildlife trade refers to the of products that are derived from non-domesticated animals or plants usually extracted from their natural environment or raised under controlled conditions. It can involve the trade of living or dead individuals, ti ...

for freshwater aquaria.Ng, T. H., Tan, S. K., Wong, W. H., Meier, R., Chan, S. Y., Tan, H. H., & Yeo, D. C. (2016). "Molluscs for sale: assessment of freshwater gastropods and bivalves in the ornamental pet trade". ''PLoS ONE'' 11(8): e0161130.

References

External links

Neritidae Gastropods described in 1831 Taxa named by René Lesson {{Neritidae-stub