Smooth Venus Clam / Concentric Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Callista, Species: Callista erycina · Veneridae (Venus Clam family) · Bivalve, whole shell valve, fan/oval shape
Species
Callista erycina
Shell Type
Bivalve, whole shell valve, fan/oval shape
Family
Veneridae (Venus Clam family)
Size
Approximately 2 to 3 inches in length, which is a standard adult size for this species. Maximum potential size typically reaches around 4 inches.
Color & Pattern
Cream to pale yellowish-tan base color with subtle, finer concentric growth lines showing delicate brownish or darker shading. The surface is smooth and polished in appearance with natural tones.
Rarity
Common
Habitat
Shallow subtidal and intertidal zones, typically burrowing in clean sandy or muddy-sand bottoms in tropical and warm temperate marine environments.
Geographic Range
Indo-West Pacific region, including Indonesia, the Philippines, northern Australia, and the tropical waters of Southeast Asia.
Description
An elegantly rounded, solid bivalve shell characterized by fine, regular concentric ribs or growth lines. The exterior has a smooth, porcelain-like finish with a gentle luster, curving gracefully from a prominent umbo down to the ventral margin.
Key Features
Rounded, oval-to-triangular bivalve shape, distinct and evenly spaced concentric growth ridges, prominent anteriorly directed umbo, and a smooth, glossy exterior texture characteristic of the genus Callista.
Collector Value
Low to moderate commercial value. While widely available and popular in shell craft and beginner collections, flawless, large, gem-grade specimens from specific localities remain desirable for general conchology collections.
Condition Notes
Good to Fine condition. Intact valve with well-preserved margins and clear concentric sculpture. Minor wear along the edge, but overall retains its natural color and structural integrity.
Interesting Facts
Venus clams are among the most successful families of bivalves globally, known for their strong burrowing muscular feet and symmetrical, beautifully patterned shells which have inspired decorative arts for centuries.
Ecological Role
Functions as an important benthic filter feeder, helping to clear organic particles from the water column. Serves as a key food source for various marine predators including carnivorous gastropods, rays, and bottom-dwelling fish.
Similar Species
Other members of the Veneridae family such as Dosinia species or other Callista species, which can be distinguished by subtle differences in hinge teeth, overall shell proportions, and finer surface markings.
Beach Finding Tips
Look along tropical sandy beaches after strong storms or high tides. Single valves are frequently washed ashore, while live or intact specimens can occasionally be found by gently sifting through shallow intertidal sandbars.
Notes
Maluku indonesia