Astrea Snail Care Guide
Astraea tecta · Saltwater Snail
What Astrea Snail look like
Astraea tecta, commonly known as the Astrea Snail, exhibits a robust, conical shell that can reach a maximum adult size of approximately 5 cm in diameter. The shell is characterized by its distinctive, spiraled structure adorned with numerous prominent ridges and a smooth, glossy surface that varies in color from pale yellow to brown, often with darker spiral bands. Sexual dimorphism is minimal in this species, as both sexes share similar shell morphology. Defensive adaptations include the ability to retract into its shell when threatened, providing protection from predators. Additionally, the shell's hard, calcified structure serves as a formidable barrier against predation. The aperture of the shell is relatively small, with a rounded opening that facilitates the snail's feeding behavior.
Behavior & temperament
Astraea tecta is primarily a herbivorous grazer, exhibiting a behavior of slowly moving across substrates to feed on microalgae and detritus. It is typically found in groups, showcasing a social hierarchy where larger individuals dominate feeding areas. Breeding behavior involves external fertilization, with individuals releasing gametes into the water column during spawning events. The species displays a generally docile temperament, posing little aggression towards tank mates, making it suitable for community aquariums. Movement is characterized by a slow, gliding motion facilitated by a muscular foot, while the snail extends its siphon to graze on available food sources.
Diet & feeding
Astraea tecta primarily feeds on microalgae and detritus in its natural habitat. In captivity, it requires a diet rich in algae, which can be supplemented with algae wafers or blanched vegetables.
Behind the name
The scientific name 'Astraea' is derived from the Greek word 'ἀστέριος' (asterios), meaning 'star,' while 'tecta' comes from the Latin word 'tectus,' meaning 'covered' or 'sheltered,' referring to the protective shell of the snail.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Astrea Snail?
AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.
