CATDOLL : CATDOLL: What are the ornamental fish suitable for breeding in the north?

Raising fish in the north is definitely different from that in the south. So, what kinds of ornamental fish are suitable for breeding in the north? Below are the ornamental fish suitable for breeding in the north that I have carefully compiled for you. Let’s take a look.

Ornamental fish suitable for breeding in the north

1. Goldfish, a traditional type of ornamental fish in my country, is basically known to everyone. Goldfish and crucian carp belong to the same genus and species, and goldfish is also a variant of crucian carp. However, there are now many varieties and colors of goldfish, which are mainly divided into three categories: Wen species, Long species, and Egg species.

2. Koi is the national fish of Japan. It originated in Southeast Asia. After it was introduced to China, it was first seen in the imperial court in my country. There was also a precedent of raising koi. Later, it was introduced to Japan, where it was optimized and improved, and the varieties became richer. According to statistics, there are more than 1,400 species of koi so far. The ancestor of koi is the common carp we often see. Therefore, it is much easier to raise it after mastering its life rules.

3. Red carp can be seen in most parks, villas, squares, and artificial lakes. They can be raised in a large area and can also be raised in ponds at home. They generally require relatively good soil and water. It is common to produce red or white variants when artificially breeding carp. After multiple hybridizations, they become stable red varieties.

4. Red crucian carp is the ancestor of goldfish. It is similar to red carp. It is easier to breed and more common. However, its body is smaller than red carp and there are more varieties.

In addition, there is the white cloud golden fish, which is a small fish that is more common in the south. It is small and lively and can be mixed with the lamp fish. The Chinese fighting fish is also called the forktail fighting fish. There are many varieties. It can withstand low temperatures of 15 degrees and basically does not need to be heated indoors.

Ornamental fish suitable for beginners

1. Japanese Koi

Japanese koi are a kind of precious large ornamental fish, known in Japan as "living works of art", "living gems in the water" and "the king of ornamental fish". Japanese koi usually live for 60 to 70 years and can reach a length of 1 to 1.5 meters. The beauty of these koi is that the color and shape of their patterns will change with age and the change of ambient water temperature, just like your own hand-painted ink painting. The best koi are selected from thousands of miles away, and the bloodline, skeleton, color, pattern, swimming style and other aspects are considered.

2. Traffic lights

The whole body is covered with a turquoise luster, and there is a bright blue-green band from the head to the tail. The color of the band is sometimes darker and sometimes lighter under different light or different environments. It is gentle and easy to raise. It likes to swim in groups in the middle and lower layers of the aquarium. It can be mixed with other species of fish. The water quality for daily breeding is mainly old water, and it is not advisable to add too much new water.

3. Swordtail

The female fish has no sword tail. Through artificial breeding, its body color is more diverse, including red, white, blue, etc. Its representative fish include red sword, green sword, white sword, black fin red sword, black fin white sword, mandarin duck sword, etc.

The requirements for the breeding of swordtail fish are that swordtail fish are highly adaptable and easy to breed. They can tolerate a low temperature of 5 degrees Celsius for a short period of time. Swordtail fish are not very demanding on water quality. They can live and reproduce normally in weakly acidic, neutral or weakly alkaline water. The suitable water temperature is 20-25 degrees Celsius. The water for breeding swordtail fish must have sufficient dissolved oxygen so that they can move in the middle and lower waters. If there is less dissolved oxygen in the water, they will float on the water surface and swim. When there is severe lack of oxygen, some male fish will jump out of the water.

Swordtail fish have a omnivorous diet and a large appetite. They do not harm other fish and can be kept together. The water temperature for swordtail fish should not be too high. Long-term high temperature can shorten their lifespan. Swordtail fish are deeply loved by people because of their peculiar body shape. They are an indispensable tropical fish species in aquariums. The lifespan of swordtail fish is about 3-5 years. When the dorsal fin of the fish is found to be slightly raised, it means that the fish has entered the aging stage.

How to raise goldfish

Feeding method

1. Feeding frequency: Only 1-2 times a day. If the weather and water quality are normal, the amount of feed can be increased slightly for fish species with strong vitality.

2. Feeding time: In spring and summer, it is better to feed early, usually around 6-7 in the morning, when the sun starts to shine on the fish tank. In late autumn and winter, the feeding time can be a little later, usually around 7-8 o'clock. Do not feed a lot in the evening. Even if the fish are obviously looking for food, it is better to feed a small amount around 3 o'clock in the afternoon. After November, it is even more inappropriate to feed in the evening.

3. Feeding amount: As the goldfish grows, the feeding amount should be gradually increased, but not blindly, especially artificial feed should be strictly controlled. For family fish farming, you can feed the daily amount 1-2 times.

Water change method

(I) Under normal circumstances, when changing water, you only need to use a hose to gently suck out 1/10-1/5 of the dirt and stale water from the bottom of the fish tank, remove dust and floating feces on the water surface, and then slowly inject new water of the same temperature along the wall of the tank to keep the water clean. This method of changing water is not easy to hurt the fish, the method is simple, and it is most suitable for home fish tank applications.

(II) Partial water change This water change method is mainly carried out in two situations. One situation is in the hot summer and early autumn, when the water in the fish tank has been changed for a few days and the water color turns green very quickly, and the water quality is still clean, in order to prevent the goldfish from scalding their tails, all the goldfish in the tank can be taken out, and then the water in the tank can be rotated in a spiral shape. After it is still for a while, 1/3-1/2 of the dirt and stale water in the center of the tank can be sucked out with a rubber tube, and then new water of equal temperature and volume can be injected, and then the goldfish can be put in.

Another situation is that the water in the tank has only been changed a few days ago, and the water color is still good, but because of excessive feeding that day, the fish float. The method of changing the water is the same as mentioned above.

(III) Complete water change This water change is often combined with turning the tank and selecting young or adult fish. It is often used when the water quality is seriously deteriorating or moss is too long, or the fish are too crowded. There are two specific methods:

1. If there is no spare pool, you have to put all the goldfish into the adjacent pool for temporary storage, and add an aerator to the basin or cage to increase oxygen. Then, after thoroughly rinsing, refill with isothermal new water, let it stand for a while until the water temperature is equal, and then put the fish back into the original tank.

2. If there is an empty pool, just scoop all the goldfish into the basin and deal with them separately. When changing water, pay special attention to the water temperature. It is best to do it before 9 o'clock in the morning on a sunny day. However, this method is generally only suitable for adult fish or larger juvenile fish. Before completely changing the water, you can first fill the spare tank with water, and then directly scoop the fish into the spare tank. In this way, the water temperature changes less and the fish can adapt easily. This water change method is generally performed once every half a month in spring and autumn. In summer, the water temperature is as high as 28℃. When the water color is very easy to be dark and the water quality is very easy to be turbid, the water should be completely changed once every 4-7 days. In winter, the water temperature drops to about 4℃, and generally no complete water change is required without special circumstances.