There are many kinds of goldfish, but according to their habits and characteristics, they can be roughly divided into four kinds.

1. Grass goldfish: Grass goldfish is a common goldfish variety, and most of the small goldfish sold in many stalls are grass goldfish. They are similar to primitive crucian carp, but they are brighter in color and more beautiful in fins than crucian carp.

2. Wen goldfish: Wen goldfish is short and looks like a "Wen". Although they are small in size, their fins are long and look beautiful.

3. Dragon goldfish: Dragon goldfish are the easiest to distinguish, and their eyes will protrude outward. But different varieties have different eye shapes. Some are like a pear, some are like grapes, and some are like cylinders.

4. Egg goldfish: Egg goldfish have no dorsal fin, their body is round, and some heads have sarcoma, which makes them look beautiful.

Different varieties of goldfish can be raised together, but not all varieties can be raised together. Grass goldfish is not suitable to be raised with other fish, because they are larger and relatively lively, and like to attack other fish. However, goldfish and egg goldfish are more suitable to be raised together, because they are similar in size and mild in character, so they are more suitable to be raised together.