Before death, the activity and appetite of traffic light fish will decrease, and the body color of many fish will also darken, and there will be listlessness and dull expression. There are also some stimulated or sick traffic light fish, which may swim sideways, turn over their bellies and hide in the corner before they die.

The difficulty of raising traffic lights is not very high, on the contrary, their adaptability to the environment is relatively strong. When reared in captivity, they can grow well as long as their water temperature and water quality are stable and food is sufficient.

1. White spot disease: The most common disease of traffic light fish is white spot disease, which is mainly caused by too much change or too low water temperature. The main performance is that there are sporadic white spots on the body surface, and in severe cases, the white spots will fester. In this case, breeders need to raise the water temperature to 26 ℃ first, and then use Baidianjing for treatment.

2, rotten tail and rotten fins: There are also rotten tail and rotten fins, which are mainly bacterial infections caused by poor water quality. The main manifestations are decay of tail and fins. Breeders need to change water immediately to ensure clean water quality. Then take a medicated bath with furacilin on the sick fish.

3. Water mold: Water mold is similar to the early stage of white spot disease, mainly because of trauma or bacterial infection. Potassium permanganate solution or oxytetracycline can be used for medicated bath for water mold.