Why do Hexagonal Salamander grow water mold in cold weather?

The main reason for the occurrence of water mold is that the surface of fish is damaged, and the reasons are roughly as follows:

1. Fishing: When the water temperature is low in winter or early spring, in the process of drying ponds or trawling, due to improper operation or too long trawling time, the fish body violently moves or jumps, resulting in the partial shedding of scales on its body surface.

2. Transportation: During transportation, because the fish are in a relatively dense state, they squeeze or scratch each other.

Parasites on the body surface: this happens after the temperature drops in late autumn, and the last insecticide is not used, so that parasites (such as anchovies and mackerel, etc. ) you can survive on the body surface, and there are wounds in the parasitic parts.

4. Overwintering frostbite: fishing with nets under cold conditions in winter, or the water level in the storage tank is too shallow, resulting in frostbite of fish due to cold wave and other weather.

5. There are dead fish in the pond: Because the water mold is saprophytic, the water mold multiplies very quickly on the fish carcasses, and then causes secondary infection to other injured fish bodies.

6. Instability of water body: Instability of water body causes fish stress, physical decline, and is prone to bubble disease, which is one of the main factors that aggravate death. Practice has found that the water is relatively clear, and it is more prone to water mold in continuous rainy days.

7. Other factors: In winter and spring, the pond water is too thin, the fish are extremely hungry or malnourished, and it is also easy to be infected with water mold.