10 Marbled Purple Snails (Pond Snails) - 1/4 to 1/2 Inch Long Juveniles by Aquatic Arts These snails eat algae, waste, and invertebrate pellets or fish food. The snail's body is usually maroon, purple, or ivory, with some overlaying golden marbled coloring. EXCELLENT for "garbage duty", these scavengers will eat all leftover food and waste in a tank. All Aquatic Arts (formerly InvertObsession) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners! These snails reproduce VERY quickly, making them a great live food starter colony for puffers and other animals that eat snails.