Barnacle Tetraclita squamosa

  • Rocky Shores
  • Crustaceans
  • Barnacle


Tetraclita squamosa is a barnacle from the Tetraclitidae family. It is mostly green and black, with two pairs of white spots[1]. Individuals are hermaphroditic, that is, possess both male and female reproductive organs.


[1] Chan, ‘Studies on Tetraclita Squamosa and Tetraclita Japonica (Cirripedia’.

Habitat and ecology

This species is present across the Indo-Pacific region. Recorded depth range is between 0 to 3m. It is commonly found on exposed rocky shores. They are broadcast spawners and the eggs hatch and develop in various larval stages before metamorphosing into adults[1].


Conservation and management

The conservation status of this species has not been evaluated yet.


[1] ‘Tetraclita Squamosa’.

Did you know?

This species is often confused with Tetraclita japonica, which is purplish grey and has no patterns.