Astraea Snails - Astraea tecta
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The Astraea Snail (Astraea tecta) is a hardy, efficient algae grazer popular in reef aquariums. Known for its star-shaped shell and strong appetite for film and microalgae, this snail is excellent for long-term maintenance of clean rockwork and glass.
Common Name: Astraea Snail
Scientific Name: Astraea tecta
Family: Turbinidae
Temperament: Peaceful
Difficulty: Easy
Native Region: Found throughout the Caribbean and Western Atlantic, inhabiting rocky reef areas with abundant algal growth.
Tank Size: Minimum of 10 gallons
Temperature: 72–78°F (22–26°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate: Live rock and hard surfaces for grazing.
• Algae Control: Excellent at removing film algae, diatoms, and light hair algae from rocks and glass.
• Special Note: Cannot flip themselves easily if overturned—right them promptly to prevent stress or death.
• Diet: Primarily herbivorous; may require supplemental algae wafers in low-algae systems.
• Tankmates: Ideal for peaceful reef setups; avoid predators such as crabs, large wrasses, or pufferfish.