Aquarium Snail Food. Watermelon, grapes, pumpkin, apple, and pear are just some of the fruits that freshwater snails love to eat. If you are unsure how to feed your snail, give it a wide range of fruits, vegetables, and seeds, such as apples, tomatoes, and mushrooms.
However, they are a useful. Freshwater snails also eat aquatic plants. Sure, many snails will eat leftover food, algae, and decaying plant matter.
Healthy Aquarium Snail. Clea helena is an assassin snail that feeds exclusively on other snails. Nerite snails are some of the most popular aquarium snails on the market and, when you see their small stature and striking striped shells, it’s not hard to see why.
Many snails also scavenge through the substrate looking for food, so be sure your snail has some type of stable environment available at the bottom of the tank. To improve the health of your freshwater snails, you should make sure to provide them with a healthy environment and plenty of food. But basically you just have to take your chances.