Why did the lampfish turn white when it was out of light?

A normal phenomenon can also be said to be a kind of self-protection of fish.

This is known as night coloration, which is the night color pattern (camera-independent......）

The reason why fish have such characteristics, according to the information I have found, is related to their living habits. The daytime color mode helps them spot and identify their own kind, while the nighttime color mode helps them avoid nocturnal predators, i.e., they don't look so conspicuous. For example, the night color pattern of the three-line pencil is to blend in with the surrounding environment, in the natural environment, the three-line pencil prefers to sleep near the water surface with dense aquatic plants, and the pattern of their longitudinal strip is exactly the same as that of vertical aquatic plants; During the day, the three-line pencils like to swim in groups in pelagic waters, and the stripes they traverse can be extended when they gather and make the fish appear larger, leaving predators at a loss.

As for the specific reason why fish change color, we must first know why fish have color. The body color of the South American lampfish, such as the Pauline lantern and the pencil fish, is determined by the body wall pigment cells, and the color in these cells is formed by a crystal called guanec purine, and the hormone influence of this crystal receptor can undergo chemical changes and change the color. And the light fish in Southeast Asia, such as **crucian carp, almost do not change their body color at night, this is because their body color is formed by the precipitation of pigment under the skin, just like freckles, which is "dead".

According to the latest research, this melatonin that facades the fish is similar to adrenaline, which is not controlled by the fish, and due to the different concentrations and parts of the hormone, the color of the fish body also changes.

You can see more specific information.

Hypoxia solution:

1. Add an aeration pump.

2. The water level is not high.

3. Remove the thermostatic tube.

4. Fish feces can be pumped every day, but after the water is cleared, it should be poured back, and the water can be changed by 1 3 per week.

5. Aquatic plants should absorb oxygen at night, and if there is no lighting, they will be raised in vain. If you want to raise, you can match a 7-14w trichromatic lamp and illuminate it for 6-10 hours a day to ensure the normal growth of aquatic plants. It is recommended to buy a small water banyan and tie it to a stone or sunken wood and throw it in, you can live without sand.

6. With a filter, the water quality can be maintained for a longer time.

That's a sign of hypoxia, and when the fish comes out of the water, they get out of the water, so the color changes, and the survival rate of this fish is not high, but it can be eaten, and there is no problem.

The color of the red and green bai light fish will fade, and there are three kinds of can be du:

1. Traffic lights like zhi low-light dao

Reduced vigilance in low light, body specialization.

The color will also fade. Some tropical fish change their color depending on temperature and light, as a form of self-protection.

2. Because of the change in pH caused by water change, the color of the traffic light fish will also fade. Traffic light fish like soft water, weak acidic water quality, the general family is not easy to meet, the water contains chlorine will also harm the traffic light fish, so that its body color is lighter. In this case, you should pay attention to changing the water in the future, if the water quality is too poor, it is best to boil the tap water and let it cool, and then use it to change the water.

3. The traffic light fish is sick. The color will also fade after getting sick, and it is easy to distinguish with the swimming and eating abnormalities of the fish. After getting sick, it is necessary to determine** as soon as possible**, and then carry out symptomatic treatment**.

Because the color of the traffic lights will fade at night, it will be better in the morning.

It is a truth that the leaves of mimosas should be combined at night.

The position of the fish tank is not lit enough; Or the fish tank does not have enough time to turn on the lights, and this kind of fish needs more than 6 hours of light time for the color to be gorgeous.

The water quality is deteriorated, hurry up, it is best to use potassium permanganate to thoroughly disinfect the fish tank before use, soak the fish with a trace amount of potassium permanganate for about 15 minutes or yellow powder soak, that is, the time to soak a little longer.

Don't use a white light, the fish won't be red after a long time, change to a red light.

New fish will appear in a surprise phenomenon, the color will become lighter, and it will recover in about a week.

The other thing is to give sunlight.

Just like when humans stay in the dark for a long time, or rarely receive light, their skin tone will become noticeably whiter. - In the same way, once a goldfish is kept in a dark environment, and after a certain period of time, its bright color will begin to fade and even turn white. This is mainly because the pigment cells in the goldfish do not get light and cause growth to be stunted or die directly, so they cannot function properly.

1. Goldfish fading is a normal phenomenon, in fact, it is also accompanied by fading during the development of goldfish. All species of goldfish do not have a beautiful bright color when they hatch from the eggs, but are almost grayish-brown. As the goldfish develops, these pigment cells gradually disappear and slowly transform into a fixed body color.

For example, black goldfish will fade to orange-red after two or three years, while goldfish that look like orange-red tend to fade to white. Variegated goldfish is the intermediate state when the goldfish is not completely faded.

2. Light helps body color cells grow healthily and stably, and light is no less important to goldfish than the demand for light from green plants. First of all, sufficient light will increase the pigment cells or body color cells in the goldfish, so the body color of the goldfish will be more vivid and stable; Secondly, the green algae in the tank can also release enough oxygen due to sufficient light, which is very helpful for the health of goldfish and the stability of body color cells. Therefore, if the living environment of the goldfish is too dim, it will not only cause its body color to fade, but also cause damage to the health of the goldfish.

But there is also a certain emphasis on the intensity of the light. If the light is too intense, it will also cause the goldfish to become lighter. This is where algae plants such as green algae are placed in the fish tank – goldfish can use these algae plants to shade when they feel inappropriate light.

In addition, in addition to the factor of light, temperature also has a great influence on the body color of goldfish, and the best "coloring" temperature for goldfish body color is between 28 and 30 degrees Celsius.

Because light is also a part of the growth needs of goldfish, if you lose light, it will naturally not look so good and become dull white, so you have to adjust the luminosity moderately when raising goldfish.

Because goldfish occasionally fades in the process of development, and the cells in the body change when the pigment cells are transformed into fish due to the disappearance of the pigment cells, so they are black.

During the ontogeny of goldfish, there is often a phenomenon of fading, and the juvenile stage of various goldfish is almost the same gray-brown, and due to the partial disappearance of pigment cells, it transforms into the body color of adult fish.