Black Devil Spike Snails (Faunus ater) are large snails with dark colored shells, growing up to 3 inches when fully grown. Also known as Lava Snails, their long, glossy shells taper into sharp, spike-like points and range from shades of chocolate brown to deep blacks. Their bodies are often gray/black or chestnut brown. They look great in a themed aquarium display, such as one that includes Viking aquarium decorations or granite aquarium rocks! These prime aquarium snails are relatives to the popular Malaysian Trumpet Snails, but they are more similar in shape and size to Giant Sulawesi Snails. They primarily come from brackish waters in Thailand, but are also found in other parts of Asia. They thrive in freshwater, but will only breed in brackish water, so you never have to worry about overpopulation in your home or desk aquarium with these snails! Black Devil Snails are more resilient and active than Sulawesi Snails, having the ability to move faster throughout the aquarium tank. They are also capable of living in colder temperatures and are known as excellent clearers of aquarium substrate. These peaceful aquarium inhabitants are safe to keep with nonaggressive freshwater fish (such as Harlequin Rasboras, Guppies, etc.) dwarf shrimp, large shrimp, and other freshwater snails, but we recommend keeping your living decorations out of reach, as these snails are known to graze on live aquatic plants. However, they’ll typically leave Marimo Moss Balls alone. Basic aquarium supplies are required when raising these snails, such as an aquarium pump system (e.g. Rio water pump), an LED aquarium bulb, and a heat aquarium device.CARE GUIDELINES:- Temperature: 71° - 82° F (22° - 28° C) - pH: 6.8 - 7.5 - KH: 5 - 15 dKH - Minimum tank size: 10 gallons per snail - Average adult size: 2 - 3" (5 - 7.6 cm) - Average purchase size: 1 - 3" (2.5 - 7.6 cm)