1. Moss rat: Moss rat can effectively remove residual bait and moss in the fish tank. It is a very common tool fish.

2. Golden Sailfish: Golden Sailfish is the cleanest fish with the highest appearance among the alien fish. They are timid and usually come out to look for food after turning off the lights at night. The Golden Sailfish can clean algae on the tank walls and aquatic plants.

3. Elf fish: Elf fish can eat algae in the fish tank, so if there are enough algae plants in the fish tank or on the tank wall, it is okay not to feed them.

4. The first-line flying fox: The first-line flying fox is also called the black-line flying fox, and is known as the "king of algae-eating fish" in the fish world. But the disadvantage is that it is very edible and occasionally attacks petite fish.

5. Scavenger: It is a tool fish with very strong ability to remove algae. But once it grows up, it will compete with other fish in the tank for food, and its ability to remove algae will obviously deteriorate and it will become very lazy.

You can also choose the following shrimps to remove

1. Black-shell shrimp: The two fingers of its turtle are sunken and slightly spoon-shaped, with brush-like hairs on the ends of the spoon fingers. , is a sharp tool for scraping algae, so it often scrapes algae for food. They mostly live in waters with dense aquatic plants and feed on algae and dead animals and plants.

Sakura shrimp: The cherry blossom shrimp is small in stature. The female’s body is bright red and has high ornamental value. At the same time, its ability to remove algae is also very strong, and it is a cleaner as good as the black-shelled shrimp.