Astraea snail

Astraea tecta

Family : Turbinidae

InvertebrateMarinesnail

A popular marine herbivorous snail in reef aquariums, valued for its algae-cleaning abilities. Small, hardy, and peaceful.

Popularity
Marine snail
reef algivore
Availability
Common in shops
Shop availability
IUCN Status
LC
Least Concern
Biotope
Caribbean
Récifs de l'Atlantique Ouest tropical.

Description

Astraea tecta has a thick conical shell, often with spiral ridges and tubercles. Its coloration ranges from gray to light brown, sometimes with darker patterns. Adults reach about 2–3 cm in diameter. It is primarily nocturnal, hiding in crevices during the day. Sexual dimorphism is not externally obvious.

Habitat

Region :

The Astraea snail inhabits shallow coral reefs and rocky areas of the Caribbean Sea. It is commonly found on hard substrates covered with algae, where it grazes on biofilm and microalgae. It prefers clear, well-oxygenated waters with moderate to strong flow.

Distribution :

Recommended parameters

Temperature2228 °C
pH8.18.4
Salinity1.0231.025
NO₃
≤ 20 mg/L
PO₄
≤ 0.1 mg/L

Care

Difficulty
1/5
Diet
Herbivore
Min. tank
40 L
Min. group
1
Adult size
3 cm
Lifespan
3 years
Temperament
Peaceful
Propagation
Reproduction rare en aquarium ; les larves planctoniques sont difficiles à élever. En milieu naturel, les adultes libèrent des gamètes dans l'eau.

Care notes

Keep in an aquarium of at least 40 L with live rock and sandy substrate. Parameters: temperature 22-28°C, pH 8.1-8.4, salinity 1.023-1.025. It feeds on algae and biofilm; supplement with dried seaweed if needed. Peaceful species compatible with all reef fish and invertebrates. Avoid predators such as crabs or pufferfish. Be cautious with copper-based medications.

Similar species

Espèces proches, même habitat ou même maintenance

References