You can give them animal feed, such as shrimp or carp.

The water temperature should be kept around 20 degrees and not more than 28 degrees.

The water quality should not be too bad or polluted.

You can improve the water quality by changing the water regularly.

The breeding density should not be too high, and the water should be oxygenated for them when the dissolved oxygen is low.

Also, it is better to keep males and females together, or keep multiple males in good condition together, which is more conducive to color development.

One, the horse mouth fish how big start coloring horse mouth fish is one of the more common fish in China, often in the freshwater basin.

The surface of their body is more colorful and in better condition after coloring.

The coloration of the fish starts around the age of 1 year, but it varies from one individual to another.

Some marlins develop color earlier, closer to one year of age, while others are the opposite, and they develop color very late, if not much later.

There are many factors that affect the coloring time of the marlins, and if you want to make the captive-bred marlins color quickly, you need to pay more attention to the matters.

Two, how to raise the horse mouth fish color fast 1, nutrition: to provide rich nutrition for the horse mouth fish, can let them faster color, and the horse mouth fish intake of nutrients is mainly from the food.

The fish like to eat animal feed, which contains more nutrients.

Shrimp is the best animal feed, but the cost of shrimp is high, so you can breed some carp fry and give the carp meat to the mackerel.

2, water temperature: although the horse mouth fish can adapt to lower temperatures, but in order to let them quickly color, the surrounding temperature try not to be particularly low, can be maintained at about 20 degrees.

Additionally it should not be too high, try not to be higher than 28 degrees, or the horse mouth fish is not easy to color.

3, oxygen supply: the oxygen content of the water is also a very important factor, you need to provide them with an oxygen-rich environment.

Therefore, the number of mackerel cultured per unit area should be controlled, and some of the oxygen can be supplemented artificially when necessary.

4, mixing and competition: If you want to make the mackerel color fast, you can put the males and females together, so that they are more likely to color.

Also, if you only breed males of mackerel, you can introduce competition, that is to say, let different males compete with each other, which is also helpful for their color development.

5, water quality: water quality is also a very important factor, regular water changes are an important way to improve the quality of the water, not to let the water quality is too poor.