CATDOLL : CATDOLL: What are the factors that affect the color of ornamental fish (mainly external factors, not including genes, such as temperature, certain ions, etc.)

1. The temperature is suitable for burial and is slightly higher

2. Bright light with wide spectrum

3. The feed is nutritious enough

4. The fish tank environment is stable and cannot be changed all the time.

The body color of fish mainly depends on the presence of pigment cells in the skin and is controlled by the nervous and endocrine systems. These cell segments mainly contain four types of pigments, namely carotenoids, melanin, pteridine and purine. Science is so profound, let's talk about it in simple terms. People have food, clothing, shelter and transportation, and fish need beautiful clothes. Food, shelter and transportation are also very important.

Food:

1) What to eat: Generally, it is difficult to find effective natural pigment sources in wild environments in breeding environments. Currently, feeds on the market already contain a variety of colorants. Choose suitable feeds or live animals, cross-feed as much as possible, balance nutrition, and choose appropriate pigment intake;

2) How much to eat: Most fish lovers know that fish are in the best condition when they are 70% to 80% full. Overfeeding will cause the fish to become overweight. Most fish have fat deposits on their silver belly skin, which proves that overweight fish will turn white.

live:

1) Appropriate temperature, appropriate pH, and appropriate hardness. This should go without saying.

2) Good water quality. Harmful substances will affect the health of fish. Unhealthy fish will definitely not have bright colors.

Certain neurotoxins can also affect the color of fish;

3) The brightness and spectrum of light affect the body color of fish. Deep-sea fish are generally darker or lighter in color;

4) The color of the environment. Fishes adapt to the environment and their body color changes with it.

OK:

1) The size of the water flow affects the movement and stillness of the fish, and the body color is different in different states;

2) Behavior = sex. During the estrus period, fish compete to attract or intimidate the same sex, so their body color is brighter than usual.

3) Safety: Tension will make the fish's body color lighter, so the environment should not be changed frequently and the feeding density should not be too high;

There may be other factors that I don’t understand (typing is so tiring), but in short, simulating the wild environment of the fish as much as possible in these three aspects is the key to keeping the ornamental fish’s body color bright.