Goldfish are a type of fish formed through prolonged evolution and selective breeding from Carassius auratus (crucian carp), ultimately developing into ornamental varieties.
Classification by breed: Goldfish are primarily categorized into four groups: Common Goldfish, Dragon-type, Wen-type, and Egg-type. This article focuses on the Common Goldfish.
The grass – type goldfish is quite similar to the gold crucian carp, the ancestor of goldfish. The main characteristics of the grass goldfish are its resemblance to the crucian carp, with a flat and slender body, and bright colors.
Body shape: The grass – type goldfish resembles the crucian carp, with a laterally compressed and slender body, which is spindle – shaped.
Caudal fin: The caudal fin of the grass – type goldfish can be divided into long – tailed and short – tailed types. The short – tailed ones are generally called grass goldfish, while the long – tailed ones are called long – tailed grass goldfish or swallow – tailed goldfish. The caudal fin of the long – tailed grass goldfish is usually relatively long. Since its caudal fin is very similar to the tail of a swallow, it is also known as the swallow – tailed goldfish. Although the caudal fin varies greatly, the common feature of grass – type goldfish is that they all have a single caudal fin.
Color: Grass – type goldfish have bright colors, and common colors include red, white, and red – and – white patterns.
Grass – type goldfish swim quickly, have lively personalities, are robust in body, and are very easy to keep.
1.common goldfish
The ancestor of goldfish has the same body shape and caudal fin as common crucian carp, being slender and short. Gold crucian carp are robust in constitution, with strong resistance and adaptability, and have a wide – ranging diet. They don’t require meticulous management and are easy to raise. When kept in a pond, with sufficient bait, they grow relatively fast. A three – year – old gold crucian carp can weigh over 500 grams and be about 30 centimeters long, and the longest can reach 50 centimeters. Besides red, their colors also include silver – white and red – and – white patterns.
2.comet goldfish
3.single tailed fancy goldfish
4、jikin goldfish
