Description

Astrea Snail (Astraea tecta)
The Astrea Snail is a hardworking algae grazer and a staple in many reef aquariums. Recognizable by its pointed, conical shell, this snail is most active on rockwork and glass, where it grazes on film algae and diatoms. Astreas are peaceful and efficient, making them an essential part of any cleanup crew, though they may need a helping hand if they tip over due to their narrow shell base.

  • Care Level: Easy

  • Reef Safe: Yes

  • Diet: Film algae, diatoms, biofilm

  • Behavior: Peaceful, slow-moving grazer

  • Recommended Tank Size: 10+ gallons

🐚 Astrea Snail (Atlantic)
Scientific Name: Lithopoma tectum
Common Name: Astrea Snail
Size: ~1 to 1.25 inches
Reef Safe: āœ… Yes
Temperament: Peaceful
Diet: Herbivorous – eats film algae, diatoms, and green algae
Tank Role: Glass and rock surface grazer

Astrea Snail

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        DescriptionDescription

        šŸ” Description:
        Astrea snails are cone-shaped algae grazers with thick, ridged shells that often host coralline growth. The Atlantic species (Lithopoma tectum) is native to the Caribbean and is known for being a hardy, budget-friendly clean-up crew member.

        They’re best known for keeping glass, rocks, and powerheads free of film and diatom algae. However, unlike Trochus snails, they cannot right themselves if they fall — which means regular tank checks are important to keep them healthy.

        Must HaveMust Have

        āœ… Why They're a Must-Have:

        Glass Cleaning Specialist: Excellent for removing green film and diatoms from tank walls and overflows.

        Hardy & Inexpensive: A great starter snail for new reefers and budget-minded systems.

        Visually Active: Often seen climbing high on glass and equipment where algae tends to build up.

        No Coral Risk: 100% reef safe and compatible with all corals and peaceful inverts.

        Notes for SuccessNotes for Success

        āš ļø Notes for Success:

        Can’t Self-Right: Flip them over if found upside down — or they may die within hours.

        Limited Sand Cleaning: Primarily grazes on hard surfaces — not a sand-sifter.

        Algae Dependency: Will starve in ultra-clean systems without supplemental algae or nori.

        Moderate Flow Preferred: Too much flow can dislodge them easily due to their shape.

        Best Used ForBest Used For

        🧽 Best Used For:

        Tanks with film algae buildup on glass and powerheads

        Starter clean-up crews for beginners or small reef systems

        Systems where affordable, dependable grazers are needed

        Description

        Astrea Snail (Astraea tecta)
        The Astrea Snail is a hardworking algae grazer and a staple in many reef aquariums. Recognizable by its pointed, conical shell, this snail is most active on rockwork and glass, where it grazes on film algae and diatoms. Astreas are peaceful and efficient, making them an essential part of any cleanup crew, though they may need a helping hand if they tip over due to their narrow shell base.

        • Care Level: Easy

        • Reef Safe: Yes

        • Diet: Film algae, diatoms, biofilm

        • Behavior: Peaceful, slow-moving grazer

        • Recommended Tank Size: 10+ gallons

        🐚 Astrea Snail (Atlantic)
        Scientific Name: Lithopoma tectum
        Common Name: Astrea Snail
        Size: ~1 to 1.25 inches
        Reef Safe: āœ… Yes
        Temperament: Peaceful
        Diet: Herbivorous – eats film algae, diatoms, and green algae
        Tank Role: Glass and rock surface grazer

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