Skip to main content
Saltwater Aquarium Guide Reef-keeping magazine
Species Profile

Astrea Snail

The standard reef cleanup snail — effective algae grazer but cannot right itself when knocked over.

Astrea Snails (Astraea tecta) are workhorse algae grazers and a CUC standard. Their one weakness: they cannot right themselves when flipped onto their backs, so check the tank daily and flip any that have fallen.

  • Min tank: 10 gallons
  • Diet: Algae
  • Reef safe: Yes
  • Difficulty: Easy