The goldfish can recover after turning black. Not only does the tail of Yuanbao fish tend to turn black, but its body also turns black. You only need to buy a piece of old wood and put it in the fish tank. The size of the old wood should be chosen according to the size of your fish tank. It will change back on its own over time.
You don’t need to feed him often. If he eats the food you give him quickly, you can give him some more. If he eats slowly, you don’t have to give him any more. You have to take out the uneaten food. That's it. If you are afraid that the fish will get sick, there will be no problem if you change the water frequently.
Morphological characteristics of the red ingot fish
The body of the red ingot fish is flattened on the sides and round, with a body length-to-height ratio between 1.0 and 1.1. The head is small, the front and back are round and bulging, and there is a slight depression extending from the head to the front and back. The mouth is T-shaped, crescent-shaped or triangular. The whole body is red without black spots. And it has the characteristics of healthy fish, intact fin rays, transparent and full eyeballs, and clear gill filaments.
The morphology of blood parrots is changeable. If you carefully observe the mouth shape, head and back and body color of blood parrots, it is difficult to find two identical blood parrots. Blood parrot seedlings are similar to common cichlid fry from Central and South America. They do not have any of the characteristics of blood parrots and have no color.
It is not until 20 to 30 days later that the body's pigment begins to accumulate and proliferate. It is silver-gray at first, and then gradually changes color. The appearance of the little blood parrot will also slowly change. The muscles on the back of the head and back will gradually bulge and the thickness will begin to increase. The body color will gradually change from striped black to gray silver. It will not be until after 50 days, when the body length can reach about 4 to 5cm, that the body will gradually turn red.