Common name: Cake Nassa

Scientific name: Nassarius arcularia (Linnaeus, 1785)
Nassa mud snail (dog whelks) - Nassarius arculariusNassa mud snail (dog whelks) - Nassarius arcularius
Nassa mud snail (dog whelks) - Nassarius arculariusNassa mud snail (dog whelks) - Nassarius arcularius

General information

Nassarius Snails, specifically Nassarius arcularia, are a popular choice among reef aquarium hobbyists for their scavenging abilities. These small gastropods are known for their distinctive behavior of burrowing in the sand bed and emerging when they sense food in the water. They play a crucial role in the cleanup crew by consuming detritus, uneaten food, and decaying organic matter, thus helping to maintain water quality and reduce nutrient buildup.

Details

Recommended minimum tank volume
38 liter (10 gallons)
Salinity
S.G. 1.023 to 1.025
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
5 cm (2″)
Care level
Easy Burrows in sand, aids detritus removal
Diet
Detritivore Scavenges for detritus and leftover food
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Mollusks
    Mollusca
  3. Class
    Gastropods
    Gastropoda
  4. Order
    Neogastropods
    Neogastropoda
  5. Family
    Nassarius Snails
    Nassariidae
  6. Genus
    Nassarius Snails
    Nassarius
  7. Species
    Cake Nassa
    Nassarius arcularia (Linnaeus, 1785)
  8. Synonyms
    Arcularia coronata Link, 1807
    Buccinum arcularia Linnaeus, 1758
    Buccinum obvelatum Deshayes in Laborde & Linant, 1834
    Distorsio arcularia Röding, 1798
    Nassa arcularia (Linnaeus, 1758)
    Nassa plicata Bolten, 1852
    Nassa rumphii Hombron & Jacquinot, 1938
    Nassa scalariformis Mörch, 1852
    Nassa sulcifera A. Adams, 1852

Care

Nassarius arcularia are hardy and adaptable, making them suitable for both novice and experienced aquarists. They thrive in aquariums with a deep sand bed, which they use for burrowing and as a source of food. It's important to ensure that the tank has a sufficient amount of organic matter for them to feed on, but not so much that it compromises water quality. Overfeeding can lead to population booms, which may result in a lack of food and subsequent die-off.

Reproduction

In the home aquarium, Nassarius arcularia can reproduce if conditions are favorable. They lay eggs in capsules, which are often attached to the aquarium glass or other hard surfaces. The larvae, known as veligers, are planktonic and can be challenging to rear in captivity due to their specific feeding requirements.

Habitat

Nassarius arcularia is found in tropical marine environments, often in shallow waters with sandy substrates. They are distributed across the Indo-Pacific region. In the wild, they are commonly found at depths ranging from the intertidal zone to several meters below the surface.