CATDOLL : CATDOLL: When raising grass carp and goldfish together, why is the tail and eyes of one of the grass carp red?

Grass carp and goldfish are kept together. Why is the tail and eyes of one of the grass carp red?

Grass carp's eyes are red

That may be because of grass carp hemorrhagic disease, a common disease of grass carp caused by reovirus

Bleeding disorders

Overview: Hemorrhagic disease is a contagious fish disease.

Symptoms: The main symptoms are congestion around the eye sockets, gill covers, oral cavity and the base of various fin rays. If the skin is peeled off, the muscles are dotted with congestion. In severe cases, the entire flesh is red. The intestines, kidneys and liver are also congested. The gills are light red or pale, and the scales are intact. The sick fish swim slowly and do not eat feed. The fish of the same year and fish over 1 year old are sick, and it can cause a large number of goldfish deaths. The disease is prevalent when the water temperature is 25-30℃, and summer and early autumn are the seasons for this disease to occur.

Prevention and control methods: Keep the water fleas as sparsely as possible and feed them with live water fleas, which has a certain control effect. Sprinkle poultry erythromycin at a concentration of 0.4-1ppm throughout the pond, which has a certain effect.

What's wrong with the red spots on the fish?

Your fish has a hemorrhagic disease.

Hemorrhagic disease is a contagious fish disease.

Symptoms: mainly congestion around the eye sockets, gill covers, oral cavity and various fin ray bases. If the skin is peeled off, the muscles are dotted with congestion, and in severe cases, the entire flesh is red. The intestines, kidneys and liver are also congested. The gills are light red or pale, and the scales are intact. The sick fish swim slowly and do not eat feed. The fish of the same year and fish over 1 year old are sick, and it can cause a large number of goldfish deaths. The disease is prevalent when the water temperature is 25-30℃, and summer and early autumn are the seasons when this disease occurs. Prevention and control methods: Keep the fish as sparsely as possible, and feeding live Daphnia has a certain prevention and control effect. Sprinkling poultry erythromycin at a concentration of 0.4-1ppm throughout the pond has a certain effect.