The fish suitable for raising in the grass tank are as follows:

1. Moss mouse: It is a clean grass carp kept in small fish tanks and grass tanks. Its eating habits are quite diverse, with an adult body length of about 15 cm, and some have brown spots in the middle of the back. It is recommended to raise more, because its individual cleaning ability is weak.

2. Elf fish: It is a relatively common small alien fish. Its body length is generally about 3 cm long, and it is very timid and docile, and it will not grab food. Its cleaning effect is better than that of rat fish, and it can be rated as the best straw jar cleaner. However, the mortality rate is higher than other fish, so you can buy more if you keep them.

3. Black-line flying fox fish: It's about the size of an elf, with an obvious black line in the middle, and it's very gentle, but it's best not to raise it alone, or it's easy to hide by itself. This kind of fish also likes to eat fish food, but if it eats too much fish food, it won't eat algae.

4. Little monkey flying fox fish: This kind of fish has an obvious black spot on its tail handle. They also eat fish food, but they always eat and eat algae without rest. If this kind of fish is kept in a haystack, it is suggested to feed less fish food, so that it will eat more algae.

5. Mary fish: Its belly is big, cute and cute. It likes to eat oil slick floating on the water. It is a viviparous fish with a body length of about 5 to 12 cm. It is easy to breed, but it is best to protect the bred little Mary, otherwise it will be easily eaten by other fish.