At Mother of Aquatics we pride ourselves on our quality and well cared for fish and inverts. The images of fish on this website are often generic images that we use as we don’t always have time to upload fresh images of the current stock however; Please contact us for pictures of any stock and more information on care. Assassin snails (Anentome helena) are found in the lower reaches of freshwater areas of rivers on sand and mud. Predator and scavenger, feeding on worms, gastropods and carrion. Animal with separate sexes. The female lays several clear egg capsules which are roughly square in shape.