Hangtai Aquarium: koi fade? Seven elements to find the root cause and solve the problem

Brocade carp are loved by many families for their bright and festive body color. Generally speaking, the pattern of brocade carp is relatively bright or red all over the body. However, some fish friends find that the carp at home will fade after being raised for a period of time, and the color gradually fades to white or black. What is the reason for this? Does the change in body color prove that the fish are not healthy? Today, let's learn about this common and annoying question.

First, inject pigment

In fact, not all brocade carp have bright body color, and a considerable number of fish are born with lighter body color. However, many koi were injected with pigment at the beginning, but the pigment gradually disappeared when they came back, so the koi gradually turned white.

2. Feed

Some koi can turn red by eating feed with lycopene from an early age, but fish friends buy it home and seldom continue to feed it to the original feed, so their body color becomes lighter. If you want to keep it, the owner should buy those feeds with red effect to feed them, but choose those without chemical composition to avoid harming the health of the fish.

III. Environment

The brocade carp has just arrived in a new environment and will turn white for some time. The owner does not have to worry, when they all adapt, they will gradually change back.

IV. Water quality

Brocade carp will become lighter within the first 2-4 hours of changing water, but will soon return to red. If new water is not added for more than 4 days, the koi will turn white when the water quality deteriorates. The blackening of the mouth or gills of brocade carp is a sensitive sign of poor water quality or inadaptability to water quality, so it is common to change the water every 2-3 days, 1/3 or 1/4 at a time. Keeping the water fresh can ensure that the brocade carp will not fade.

5. Fish disease

Brocade carp are prone to two diseases. First, white spot disease, which may cause discoloration, some parts of the color fade, or even become white; second, black spot disease, that is, fish grow "black spots", showing grayish white. These two situations are more troublesome. In the early stage, 1% of 3% of the salt can be soaked once a day for less than 10 minutes; if in the middle and late stages, yellow powder can be put in the tank and the water turns yellowish, which has a good effect on eliminating pathogens, and the original body color can be restored by slow rest.

VI. Temperature

Although brocade carp are highly adaptable to temperature, they are also quite sensitive to temperature. Brocade carp in low water temperature and drastic changes in water temperature is easy to produce stress reaction, the body color will also turn white, lose bright luster, and even appear black stripes or markings on the fin and tail. Therefore, in order to put the fish tank in the place where the indoor temperature difference is small, it is best to keep the water temperature within the range of 25-28 ℃, and the water temperature difference before and after each water change should not exceed 0.5 ℃. In addition, we should also pay attention to heating and oxygenating the fish tank in winter.

7. Be frightened

The red carp will fade or appear black spots after being frightened and will recover after a period of time. It is recommended that the owner had better not mix it with large aggressive fish, because brocade carp are notoriously cowardly.

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