There are many varieties of goldfish, according to the different appearance characteristics of goldfish, can be divided into four categories: grass species, Wen species, dragon species, egg species. The grass species of goldfish is the ancestor of other goldfish, other varieties of goldfish are after a long period of artificial cultivation and hybridization of different colors and different body types of goldfish category.

Grass goldfish is a common goldfish species, grass goldfish, including swallow-tailed grass goldfish fish and common grass goldfish two kinds of goldfish, this kind of goldfish is very easy to raise, the price is also lower varieties of categories are also relatively single.

Wen species of goldfish, Wen species of goldfish is a variety of varieties, more categories of goldfish species, this goldfish is characterized by a short body, the fins are longer, dorsal fin, caudal fin bilobed. One of the Wen species of goldfish Wen species of goldfish can be divided into five broad categories:

1, the head of the smooth Wen fish such as: the traditional Wen species, Ryukin and so on.

2, goldfish with a hair of the top tumor but the sarcoma does not extend like the cheeks, such as: crane red, phoenix and so on.

3. The sarcoma on the top of the head is well developed and wraps around the eyes and gill covers, such as the popular lion head goldfish.

4, there are two large pom-pom shaped goldfish at the nasal membrane.

5, under the eye with translucent blisters for the blister eye type.

Egg species goldfish, egg species goldfish obvious characteristic is no dorsal fin on the back, short body, no dorsal fin, shortened body shape, round like a duck egg. There are two types of caudal fins: long tail and short tail, the short tail is called "egg", the long tail is called "danfeng", and all other fins are short. High-quality egg breed goldfish have a rounded, curved back, with the highest point in the center of the dorsal spine.

The egg type is divided into seven categories:

The short tail is the egg fish type; the long tail is the egg phoenix type; the head sarcoma on the top is the goose head type; the head sarcoma is developed and wrapped around to the cheeks, and the eyes are sunk into the flesh as the lion head type; the nasal membrane is developed to form double pom-poms as the egg ball type; the gill cover is flipped over for the flipped gill type; and the eye with a semi-transparent bubble is the blister eye type. Famous varieties of this type of goldfish include: langsou, tiger head, danfeng and so on.

Dragon species goldfish, dragon species goldfish dragon species goldfish is a representative species of goldfish, but also the main species. Its main features are: short and thick body shape, flat and wide head, developed fins; eyeballs of different shapes, spherical, pear-shaped, cylindrical and grape-shaped, inflated and protruding outside the eye sockets, scales are rounded and large; anal fin and caudal fins are double and elongated, the caudal fin is four-lobed, the pectoral fins are triangular, and the dorsal fins are elevated.

The dragon species is divided into seven categories: smooth light top for the dragon eye type; the top of the head with sarcoma for the tiger head dragon eye type; nasal membrane developed to form a double pom-pom for the dragon ball type; gill cover flipped growth for the dragon eye gill flipped type; eyeballs slightly convex, the head was triangular for the flag toad head type; eyeballs upward growth for the flag towards the sky dragon type; eyeballs protruding cornea for the bulb eye type.