Conus pennaceus is a species of marine gastropod mollusk in the family Conidae, the cone snails. It is a predatory and venomous snail that inhabits tropical Indo‑Pacific reef environments.
Taxonomy
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Gastropoda
- Clade: Neogastropoda
- Family: Conidae
- Genus: Conus
- Species: C. pennaceus
- Authority: (Born, 1778)
Morphology
- Shell size ranges from approximately 35 mm to 120 mm in length.
- The shell is elongate‑conical, with a smooth to faintly striated surface.
- Coloration commonly displays a cream‑to‑white ground with irregular brown, orange, or reddish blotches and zigzag markings; the pattern varies among individuals.
- The aperture is narrow, and the spire is relatively low compared with some other Conus species.
Distribution and Habitat
- Reported from the western Indian Ocean, including the Red Sea, Madagascar, the eastern coast of Africa, and extending eastward through the Indo‑Malayan region to the Philippines, Indonesia, and northern Australia.
- Typically found on sandy or rubbly substrates adjacent to coral reefs, from the intertidal zone to depths of about 30 m.
Ecology
- Like all cone snails, C. pennaceus is a carnivorous predator that primarily preys on marine polychaete worms.
- It captures prey using a highly specialized radular tooth that functions as a harpoon, delivering a complex venom mixture containing conotoxins.
- Human envenomation is considered rare; however, handling live specimens is discouraged because the venom can cause localized pain and other symptoms.
Conservation Status
- The species has not been assessed by the International Union for Conservation of Nature (IUCN). Current data indicate that it remains relatively common within its range and faces no major known threats beyond general habitat degradation affecting coral reef ecosystems.
References
- World Register of Marine Species (WoRMS). Conus pennaceus (Born, 1778). Accessed 2026.
- Puillandre, N., et al. (2015). “One, four or 100 genera? A new classification of the cone snails.” Journal of Molluscan Studies, 81(1): 1‑23.
- Kohn, A. J. (1992). Chronological Taxonomy of Conidae (Mollusca: Neogastropoda). Smithsonian Institution Press.
All information presented reflects the current consensus in peer‑reviewed taxonomic and marine biology literature.
