Mactra stultorum

taxobox
name = "Mactra stultorum"

---

image_caption = "Mactra stultorum"
regnum = Animalia
phylum = Mollusca
classis = Bivalva
ordo = Veneroida
familia = Mactridae
genus = "Mactra"
species = "M. stultorum"
binomial = "Mactra sultorum"
binomial_authority = Linnaeus, 1884
synonyms = "Mactra corallina"

"Mactra stultorum" is a marine bivalve in the family Mactridae. It lives in the Black Sea, the Mediterranean coasts, and the west coast of Europe, north from Norway down to the Iberian Peninsula, and south from there to Senegal.

This species has a very thin and delicate shell, which has concentric growth lines and sometimes also has colored radiating bands, hence its common name, "rayed trough shell". The shell interior is white.

This bivalve lives on sandy (rarely soft) bottoms at depths of between 5 and 30 m, although the shell is very often found on beaches, where it has been cast up by wave action.

This species is sometimes sold in markets as a food item.