Nowadays, there are many kinds of goldfish, physical characteristics are changeable, according to the different appearance characteristics of goldfish, goldfish can be divided into four categories: grass species, culture species, dragon species, egg species. Among them, grass species goldfish are the ancestors of other goldfish, and other species of goldfish are goldfish of different colors and different sizes after a long period of artificial breeding and hybridization.
Grass goldfish are the most common goldfish species, which are extremely easy to raise and have a low price, and are divided into two categories according to the tail type
1. The single-tailed golden crucian carp
Representative species: Red Goldfish, Zhu Wenjin, Bristol Gold, Bristol Zhu Wenjin, Shouhui Guangjin

Redgrass gold
Bristol Juvenkin
Zhu Wenjin
ShouHui Guangjin
Bristol King
Second, the alloy of the double tail fin
Red and white and gold