Detailed Explanation of Prevention and Treatment Methods for Fungal Disease of Fish Internal Organs
Pathogen: Saprolegnia. Symptoms: Diseased fish generally have a distended abdomen, with red patches on the abdominal surface; dissection of the abdomen reveals the surface of the internal organ mass covered with fine hyphae, and red patches on the stomach, swim bladder, and liver. Infection initially occurs in the stomach, where it develops fully; the hyphae penetrate the stomach wall and develop within the abdominal cavity, causing ascites, and invade nearby organs as well as the peritoneum and muscles. After the diseased fish dies, the hyphae extend out through the abdominal wall. Prevention: 100ppm methylene blue can inhibit its development; using it to disinfect fish ponds can reduce infection.
Pathogen: Saprolegnia.
Symptoms: Diseased fish generally have a distended abdomen, with red patches on the abdominal surface; dissection of the abdomen reveals the surface of the internal organ mass covered with fine hyphae, and red patches on the stomach, swim bladder, and liver. Infection initially occurs in the stomach, where it develops fully; the hyphae penetrate the stomach wall and develop within the abdominal cavity, causing ascites, and invade nearby organs as well as the peritoneum and muscles. After the diseased fish dies, the hyphae extend out through the abdominal wall.
Prevention: 100ppm methylene blue can inhibit its development; using it to disinfect fish ponds can reduce infection.