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Koi Mixed-Stocking Pairing Tips and Methods for Selecting Toshi Koi
1. Male koi have better body shape than female koi: Although in the adult stage, female koi are more robust and aesthetically pleasing. However, at the toshi (first-year) stage, it is actually male fish that have a higher probability of being thick-bodied! Female fish only start sprinting again after reaching one year of age and entering their second or third year. Male...
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Which Koi varieties have good colors? Detailed guide to selection and culling methods
The culling of koi is mainly about eliminating poor fish and selecting good koi with ornamental value. So how do you cull to select top-grade koi with ornamental value? Culling koi is essentially about looking at the koi's body shape and red markings, and...
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Causes and Prevention Methods of Spring Viremia in Koi Farming
Spring viremia of koi is mainly caused by koi rhabdovirus, and is a common disease in koi keeping. It only becomes prevalent in spring when the climate gradually warms (water temperature 13 to 20°C). Symptoms: It mainly affects koi over one year old; fry and broodstock are rarely infected....
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Treatment methods for skin diseases such as vertical scale disease in koi
Vertical scale disease, also known as pine scale disease or scale erection disease. It is a disease mainly prevalent in still-water fish ponds, primarily affecting koi and other cyprinid fish. After onset, it can cause mass mortality of diseased fish. Image of Hane-shiro koi (female fish 61 cm) Symptom identification: The body surface of diseased koi is rough...
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Koi selection and water cultivation methods, taught to you in three minutes
Is the water you use to raise koi at home the right kind? (1) Surface water: rich in dissolved oxygen, and the koi raised in it have relatively vivid colors. But it contains more impurities, is turbid, and the water quality very easily deteriorates, so it must undergo biochemical filtration treatment before use. (2) Groundwater: in the water...
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Koi skin disease treatment methods, koi losing its red color? What factors affect koi coloration?
Koi coloration is mainly determined by three aspects: bloodline, feed, and water. If the bloodline and feed are good, and the water is also well managed, the koi's coloration can reach perfect expression. The relationship between koi body color and water temperature: coloration will change under the influence of water temperature, for example...
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Koi Scoring Methods and Essential Nutritional Requirements
1. Protein and amino acids. The growth of koi requires high-quality protein, and high-quality protein must contain a complete range of essential amino acids in appropriate proportions; see Table 2 for details. 2. Fat and fatty acids. The physiological function of fat is to provide energy for koi, and it also plays an important role...
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Which koi are easy to keep? Introduction to koi breeding methods
I. Selection of koi broodstock For broodstock used for breeding, generally choose those over 3 years old, over 60 cm in body length, with pure bloodlines, excellent color and quality, and strong physique. Generally, male koi can mature at one year of age, and female koi can mature at one and a half years, but at this time, due to genetic...
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Tips for Selecting Juvenile Koi and Daily Breeding Management Methods
Daily management is very important when breeding koi. Since koi live in water, among the daily management tasks, water management ranks first. The quality of the water directly affects the normal growth of koi. When the water is fresh and clear with sufficient oxygen, the fish live healthily...
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Which koi varieties are considered to have spirituality? Introduction to artificial breeding methods
Artificial breeding of koi 1. Artificial natural breeding of koi Select parent fish of the same variety with excellent quality and good bloodline, and place them in an independent clean water pond or net cage at a male-to-female ratio of 1 : (2~3) to let them spawn naturally. 2. Artificial dry-method insemination of koi Select parent fish of the same variety with excellent quality and good bloodline...
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