Grass goldfish eat aquatic plants. They are omnivorous fish, and they will eat most foods that ornamental fish can eat. Although they can eat aquatic plants, they don't like aquatic plants. When there is enough food, they will not eat aquatic plants. But in times of lack of food and hunger, grass goldfish will use aquatic plants as food.
Although they can eat aquatic plants, it is not recommended to let them eat too many aquatic plants in captivity. Because aquatic plants are not rich in nutrients and are not easy to digest. If breeders have time, it is better to feed them more foods high in fat and protein.
2. Can grass goldfish be raised in a grass jarGrass goldfish are not recommended to be raised in a grass jar, because as mentioned above, they will eat aquatic plants. If they are raised in grass tanks, they will chew on aquatic plants, which will make them lose their original ornamental value. Moreover, in the grass tank rich in aquatic plants, the space is prone to shortage, which may affect the growth and development of grass goldfish. In addition, aquatic plants also need a certain amount of oxygen. If there is no sunlight, they will absorb oxygen from water. Although the demand for oxygen in grass goldfish is not very high, when the aquatic plants absorb the oxygen from the water, grass goldfish are prone to lack of oxygen.