Common name: Lettered Cone

Scientific name: Conus litteratus Linnaeus, 1758

General Information

The Lettered Cone, scientifically known as Conus litteratus, is a strikingly beautiful marine gastropod mollusk. Its shell is adorned with intricate patterns resembling letters or hieroglyphs, making it a fascinating addition to any marine enthusiast's collection. However, this species is not commonly kept in home aquariums due to its potent venom and specialized care requirements.

Native to the Indo-Pacific region, Conus litteratus is often found in sandy or rubble substrates near coral reefs. Its unique hunting strategy and venomous nature make it an intriguing subject for marine biologists and hobbyists interested in marine life behavior. Despite its aesthetic appeal, this species is best appreciated in the wild or specialized zoological settings rather than home aquariums.

Details

Estimated price
Unknown Rarely available due to venomous nature and specialized care needs
Recommended minimum volume
100 liter (26 gallons)
Salinity
S.G. 1.023 to 1.025
Temperature
24 to 28 °C (75 to 82 °F)
Acidity
pH 8 to 8.5
Average size
15 cm (6″)
Care level
Very difficult Highly venomous and requires specialized care
Diet
Carnivore Feeds on small fish using venomous radula; live prey required
Reefsafe
No Preys on small fish and invertebrates; not suitable for reef tanks
Aggression
Aggresive Predatory towards fish and invertebrates; solitary by nature
Captive bred
No
Conservation status
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Mollusks
    Mollusca
  3. Class
    Gastropods
    Gastropoda
  4. Order
    Neogastropods
    Neogastropoda
  5. Family
    Cone Snails
    Conidae
  6. Genus
    Cone Snails
    Conus
  7. Species
    Lettered Cone
    Conus litteratus Linnaeus, 1758
  8. Synonyms
    Conus arabicus Lamarck, 1810
    Conus grueneri Reeve, 1844
    Conus gruneri Reeve, 1844
    Cucullus pardus Röding, 1798
    Elisaconus litteratus (Linnaeus, 1758)
    Strategoconus litteratus (Linnaeus, 1758)
  9. Source: GBIF | Global Biodiversity Information Facility

Care

Keeping a Lettered Cone in captivity is not recommended for most aquarists due to its venomous nature and specific care needs. These snails require a sandy substrate to burrow and hunt, as well as stable water parameters that mimic their natural reef environment. They are highly specialized predators, feeding primarily on small fish, which makes their diet difficult to replicate in captivity.

Additionally, their venom can pose a serious risk to humans and other tank inhabitants, making them unsuitable for community tanks or beginner aquarists. If kept, they should be housed in a species-specific tank with minimal handling to ensure safety.

Diet and Feeding

Conus litteratus is a carnivorous predator that uses a specialized radula to inject venom into its prey. In the wild, it primarily hunts small fish, paralyzing them with its venom before consuming them. Replicating this diet in captivity is challenging and requires live prey, which can be difficult to source and manage.

Due to their specialized feeding habits, these snails are not suitable for aquarists who cannot provide a steady supply of appropriate live prey. Feeding them frozen or prepared foods is generally not successful, as they rely on their hunting instincts to capture and consume their meals.

Behavior and Compatibility

The Lettered Cone is a solitary and highly specialized predator. It is not compatible with other tank inhabitants, as it poses a significant risk to fish and invertebrates. Its venomous nature also makes it dangerous to humans, requiring extreme caution when handling or maintaining its tank.

These snails are generally inactive during the day, burying themselves in the substrate and emerging at night to hunt. Their behavior is fascinating to observe but requires a controlled and safe environment to ensure the safety of both the snail and its keeper.

Health and Common Issues

In captivity, Conus litteratus is prone to stress and health issues if its specific needs are not met. Stable water parameters, a suitable diet, and minimal handling are essential for its well-being. Stress can lead to a weakened immune system and increased susceptibility to disease.

When selecting a specimen, look for a healthy, active snail with an intact shell and no visible signs of damage or disease. Avoid individuals that appear lethargic or have damaged shells, as these may indicate underlying health issues.

Habitat

Conus litteratus is native to the Indo-Pacific region, where it inhabits sandy or rubble substrates near coral reefs. It prefers warm, shallow waters with stable conditions and plenty of hiding spots. In the wild, these snails play a role in controlling populations of small fish and other prey species, contributing to the balance of their ecosystem.

Replicating their natural habitat in captivity is challenging and requires a species-specific tank with a sandy substrate, stable water parameters, and minimal disturbance. Due to these requirements and their venomous nature, they are best suited for observation in the wild or specialized research facilities.