Extra Fish for Thought
Kuhli Loaches are known for being good cleaner fish. As they scavenge for food, they will eat some algae at the bottom of your tank that grows on the gravel. By burrowing and scavenging, they can help to loosen food and dirt in the substrate that can subsequently be cleaned by your aquarium filter.
Mystery snails are extremely popular for their stunning colors as well as their practical benefits. They work hard to clean algae off of glass, plants, and decorations, they eat hair algae, and they keep your substrate clean and the correct color.
The Chinese Algae Eater is a unique fish that you wouldn't expect to be a popular choice among aquarists. They're not particularly colorful and tend to be solitary creatures. However, their penchant for eating algae makes them a great choice for those who want to keep their tank clean.