Description
Trochus maculatus, or the maculated top shell, is a marine snail with a solid, conical shell that reaches up to 7 cm in length. Its shell is characterized by spiral rows of beads and axial streaks of color, while the base is marked with radiating streaks or spots. It lives in rocky shores, coral reefs, and subtidal zones of the Indo-Pacific region, where it feeds on algae.
Morphology
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Shell: Conical, solid, and heavy, with a flat base.
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Whorls: Approximately 9-10 whorls that are flat or slightly concave, with a beaded spiral sculpture.
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Periphery: The body whorl is carinated (angled) and can be spinose.
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Coloration: The upper surface is typically patterned with longitudinal stripes or flames of brown, purplish, or reddish color on a lighter background. The base is marked with radiating streaks or spots, sometimes in a zigzag or finely tessellated pattern.
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Aperture: The inside of the aperture is white and lirate (lined).
Habitat and diet
Found in rocky shores, coral reefs, and subtidal zones throughout the Indo-Pacific region.
Primarily herbivorous, it grazes on film algae, diatoms, and other types of algae.
Other characteristics
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Size: Can grow up to 7 cm, though sizes often range from 3-5 cm.
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Body: Has a large foot and long tentacles.
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Economic importance: Harvested for food and its shell, which can be used for things like buttons.
