Reticulated Murex or Ramose Murex
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Muricidae, Genus: Chicoreus, Species: Chicoreus ramosus · Muricidae (Murex family) · Gastropod (snail/univalve), whole shell, spiral shape with elaborate frilly projections and a long siphonal canal
Species
Chicoreus ramosus
Shell Type
Gastropod (snail/univalve), whole shell, spiral shape with elaborate frilly projections and a long siphonal canal
Family
Muricidae (Murex family)
Size
Approximately 5-6 inches, which is within the average adult size range for this species. Adults typically range from 4 to 12 inches.
Color & Pattern
Cream to whitish base color overlaid with rich brown, chestnut, or reddish-brown spiral bands and streaks. The spines and varices feature mottled patterns of white and brown. Colors appear entirely natural and well-preserved. The interior aperture is a glossy, pearlescent white with a subtle pinkish or yellowish flush.
Rarity
Common to Uncommon, frequently traded in shell markets and found by divers, though pristine large specimens with unbroken fronds are less common.
Habitat
Found in shallow subtidal waters, typically at depths ranging from intertidal down to about 50 meters. Prefers coral reefs, rocky substrates, and areas with coral rubble.
Geographic Range
Indo-West Pacific region, ranging from East Africa and the Red Sea across the Indian Ocean to Southeast Asia, northern Australia, and as far north as Japan and the western Pacific islands.
Description
A magnificent and highly ornate predatory sea snail shell. It features three prominent varices per whorl adorned with elaborate, branching, antler-like spines and frills that give it a dramatic appearance. The body whorl terminates in a moderately long, slightly curved siphonal canal. The surface is textured with rough spiral cords and axial ridges, giving it a rugged yet intricate look.
Key Features
Distinguished by its three heavily frilled varices per whorl, branching open spines that resemble antlers or ram's horns, and a moderately long, partially closed siphonal canal. The aperture is oval with a denticulate (toothed) outer lip.
Collector Value
Moderately high collector value, especially for specimens with exceptionally long, undamaged fronds and vibrant coloration. They are staples in decorative and scientific shell collections, generally ranging from $15 to $50 depending on size and perfection.
Condition Notes
Good to Fine condition. The shell is structurally intact with most of the delicate branching spines preserved, though minor wear and slight abrasion can be seen on the tips of the longest fronds. No major fractures or boring holes are apparent.
Interesting Facts
Chicoreus ramosus is the largest species in the genus Chicoreus. Like many muricids, members of this species secrete a yellowish precursor liquid from their hypobranchial gland which, when exposed to sunlight, turns into a durable purple-blue dye historically known as Tyrian purple.
Ecological Role
As active carnivorous predators, Chicoreus ramosus plays a vital role in controlling populations of other benthic invertebrates, particularly bivalves and barnacles, which they drill or pry open. They serve an important function in maintaining the balance of reef ecosystems.
Similar Species
Chicoreus torrefactus (Fire Murex) and Chicoreus brunneus. Chicoreus torrefactus tends to be darker with more intensely colored aperture margins and shorter, darker spines, while C. ramosus is generally larger, heavier, and has lighter, more branched fronds.
Beach Finding Tips
Because these are primarily subtidal reef-dwellers, whole beach-worn specimens are relatively scarce on open shores. The best specimens are typically obtained by scuba divers or local fishermen operating around coral reef drop-offs in the Indo-Pacific.