1, water cleanliness
The cleanliness of water quality is one of the key factors of koi fish's health. Koi fish is a highly sensitive fish, and it is easy to get sick in the waters with dirty or harmful substances. Therefore, koi fish should keep the water clean, change the water sources regularly, and avoid over-feeding and over-breeding.
In addition, stable water temperature and suitable illumination are also one of the important factors to keep water quality healthy. Too low water temperature or too strong light will have adverse effects on koi fish's health.
2. The color of the fish
Koi fish is widely loved for its brilliant colors. A healthy koi fish needs bright scales and bright patterns. Fish farmers should pay attention to the changes of silver scales, black spots and red on koi fish. Any abnormality or darkening of color may be a signal that koi fish is ill, so it is necessary to adjust the diet and environment in time to keep the fish healthy.
3. Behavioral habits of fish
Common behaviors in koi fish include swimming, foraging and breathing. If koi fish's behavior and habits change, such as stopping foraging, swimming or hanging on the water, it usually indicates that there is a disease. At this time, fish farmers need to adjust the water quality and diet in time, and they can also add drugs to help koi fish recover.
4. Fin and body surface state
Koi fish fins should be intact, not torn or damaged. If the fin edge of koi fish is found to be white or otherwise abnormal, it is likely to be a signal of disease, and measures need to be taken immediately. In addition, koi fish's body surface should be clean and harmless, without scars and sores. If red or black spots or other abnormal conditions are found in koi fish, measures should be taken in time.
abstract
Keeping koi fish needs to keep the water clean, and pay attention to the color, behavior and habits of fish, as well as the condition of fins and body surface. Only by keeping koi fish healthy can he grow up healthily in the fish tank.