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What should you do if the Kumonryu koi shows symptoms of disease?
Introduction to the Kumonryu koi: The Kumonryu koi was once thought to be a variety found only in German carp, but it is actually a by-product of the "Utsuri" koi system, and appears to refer to a variant koi of the Magoi. Its snow-white base is elegant, and the sharply defined edges of its ink-black markings are eye-catching. However, when the ink-black is first emerging...
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How to keep koi fish, common bacterial diseases of koi in autumn - skin inflammation and congestion disease
Bacterial diseases: skin inflammation and congestion disease (1) Cause: Most of the affected fish are large older fish and koi over one year old. The epidemic season runs from late spring to early autumn and can cause massive fish deaths. It is most prevalent when the water temperature is 20-30°C, and below 20°C, a few cases still occur...
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How Often Should Koi Pond Water Be Changed? Three Common Koi Diseases and Symptoms in Autumn
Three common koi diseases and symptoms in autumn...
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Koi breeding technology: autumn is the season for a common koi disease - skin congestion disease
This disease is usually caused by insufficient light, poor water quality, or repeated stimulation from new water. It is especially obvious during the rainy season and in seasons with variable temperatures. Skin congestion disease in goldfish is usually caused by Gyrodactylus, fish lice, and Lernaea cyprinacea. After Gyrodactylus parasitizes, the body surface mucus of the diseased fish...
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Common Koi Diseases and Spring Fish Disease Prevention Methods
What are the prevention methods for koi fish diseases in spring? If you want koi to stay disease-free, we must do a good job of maintaining the water quality for raising koi. Most common koi diseases are caused by water quality. Suitable water quality environment for koi breeding: the water temperature is best at 23-25°C, the pH of the water...
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What are the common diseases of koi fish? A detailed explanation of the spring outbreak of dropsy with erect scales
In spring, fish are prone to dropsy with erect scales. Because of stocking fry or relocating fish in spring, it is often a season with frequent fish diseases, and most are caused by physical damage to the fish body. Dropsy with erect scales, a common spring disease of koi fish. Dropsy with erect scales is also called scale-erection disease or pine-cone disease. Its symptoms...
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How to Keep Koi Fish? Common Breeding Mistakes and a Complete Guide to the Causes and Prevention of Tail Rot Disease
Koi Tail Rot Disease and Hole-in-the-Head Disease. The disease is contracted through skin infection after the tail fin is injured. Symptoms: In the early stage of the disease, there is a yellow or yellowish-white viscous substance on the outer edge of the fin and the caudal peduncle; then the tail fin and caudal peduncle become congested, inflamed and ulcerated. In severe cases, the tail fin rots away, and the ulcerated area...
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Symptoms, causes, and treatment methods of white head and white mouth disease in koi
Causes of white head and white mouth disease in koi. White head and white mouth disease can also be caused by a massive invasion of Trichodina. Symptoms: sick fish move slowly, body color is slightly dark, and the top of the head and area around the mouth turn white. Taking tissue from the affected area to make a slide and examining it under a microscope, you can see clusters of parasitic flower bacteria constantly swinging, or you can see groups of Trichodina moving. The pigment in the skin of the forehead and around the mouth of the sick fish disappears, appearing white.
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What to Do When a New Koi Lies on the Bottom of the Tank? Causes and Treatment of White Fungus Disease
White fungus disease, also known as saprolegniasis. This disease generally occurs in low water temperature environments below 20°C, and is most prevalent in early spring and late winter. Water molds have no strict selectivity for hosts, and both fish eggs and adult fish are easily infected. Fish in densely stocked overwintering ponds, fish in lean water bodies in spring...
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Causes and Treatment Methods of Koi Carp Gill Rot Disease
Symptoms of gill disease (1) Commonly known as "open skylight", the gill filaments rot and carry mud; in severe cases, the cartilage at the ends of the gill filaments is exposed, the inner epidermis of the operculum is congested, and the central epidermis is often corroded into a round transparent small hole. (2) Gill mold disease caused by fungi: the gills of diseased fish appear pale...
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