The goldfish tail is congested and rotten

(1) Symptoms: The edge of the fin rays of the diseased fish appears milky white, and then rots, resulting in incomplete fin rays, especially the tail fin. Sometimes the connective tissue between the cartilage of each fin ray splits, sometimes the tail fin becomes broom-shaped, and in severe cases, the entire tail fin rots. The scales of sick fish are normal, or individual scales may fall off. The tail fins of some sick fish are congested, showing blood streaks.

(2) Pathogen: It may be bacteria, and the name of the bacteria needs to be identified.

(3) Harm and epidemic situation: Fish from the current year to spawning broodstock will suffer from this disease, and it is most common in large fish. It occurs all year round and often causes the death of sick fish in summer. When the water temperature is low, the entire tail fin rots away, and the sick fish is still alive, making the goldfish sick. The ornamental value of koi is reduced, and goldfish raised at home are prone to this disease. This disease occurs all over the country.

(4) Prevention and treatment methods:

1. Apply malachite green 1% concentration aqueous solution to the cracked fin rays. Apply once a day for 35 consecutive days. To prevent water mold infection and promote wound healing. Then use

Spray the entire pool with nitrofuracillin or furazolidone at a concentration of 1ppm-2ppm.

2. Apply furazolidone or Rivanol 1% concentration aqueous solution once a day for 3-5 consecutive days. Then sprinkle the entire pool with nitrofuracil or furazolidone at the above concentration.

3. Sprinkle Rivanol all over the pond. Suitable for valuable species, the concentration is the same as for the prevention and treatment of gill rot disease.

4. While treating with drugs, it is necessary to feed water fleas, water fleas, water fleas and other animal feeds to strengthen nutrition to enhance disease resistance and tissue regeneration

Force.

5. If part of the tail fin is rotten and incomplete, it should be cut off with scissors to make the fins flat, and then treated with the above-mentioned drugs. Usually after 10-15 days, the split fin rays can heal, and the clipped fin rays can also regenerate. Usually after 4080 days, the entire tail fin can grow back. A trace is left between the regenerated fin ray and the original old fin. The ornamental value of this fish is reduced, but it can be kept as parent fish for breeding offspring.