Anentome helena, commonly known as the Spiral assassin snail, is a freshwater snail species native to Southeast Asia. It's popular in the aquarium hobby for its unique behavior and striking appearance. Overview Scientific Name: Anentome helena Common Name: Assassin snail Family: Nassariidae Habitat: Freshwater rivers and lakes in Southeast Asia (e.g., Thailand, Indonesia, Malaysia) Notable Features Appearance: Yellow and dark brown striped shell, usually conical in shape. Size: Typically grows up to 2–3 cm (about 1 inch). Behavior: Carnivorous and predatory—feeds on other snails, making it useful for controlling pest snail populations in aquariums. Reproduction: Lays single eggs on hard surfaces; not known to reproduce rapidly in captivity. Aquarium Use Tank Compatibility: Peaceful with fish and shrimp, but will prey on smaller snails. Water Parameters: Temperature: 22–28°C (72–82°F) pH: 6.5–8.0 Hardness: Moderate to hard water preferred
