The tubules are connected to a system of ducts that merge into a single one, the ureter, which runs from the kidneys to a pore just in front of the vent, where the urine is voided. The testes produce sperm (milt) cells, many millions of which may be released during the breeding period. There are three … The immune system comprises many elements, the first line of defense being the scales and the mucus which covers them. When Koi is found dead, make a due examination of its gills, mucosa and outer … There are two distinct types of scale pattern found on Koi: completely scaled, and the so-called doitsu, in which the scales are enlarged and arranged along the midline of each side of the body and, usually at the dorsal and anal fin bases. The skeleton has several major functions: it forms a protective and supporting framework for the internal organs and tissues, and enables the fish to move by providing a series of flexible joints and attachment points for muscles. Motoguro present on one fin and not on the other is a flaw, as well as the more common defect of both fins showing a uniform … I also think she might have a little red on her left pectoral fin. Basically a motoguro is solid stretch of sumi (black) that appears on the pectoral fins and it starts from the joint close to the body … The gut and the ducts from either the testes or ovaries terminate at this point. The gills are the equivalent of our lungs; they provide a large surface area of tissue where carbon dioxide is exchanged for oxygen. This system of canals and tubes forms part of the lateral line organ. In Koi, there is no stomach; food is digested in the very long intestine. The red blood cells contain haemoglobin, a red pigment that binds with oxygen. It seems that they are sensitive to water movement, waves and disturbances in the water, enabling Koi to avoid other fish, objects and the pond walls. The pineal organ, located on the upper surface of the forebrain, is light sensitive and is thought to represent the remnant of a second pair of eyes on top of the head in some remote ancestor of vertebrate animals. male koi fish pectoral fins Male koi may also have larger pectoral fins than females. Koi with a dark or light blue back, orange or red cheeks, pectoral fins and belly are Asagi. The dermis also contains chromatophores, which are responsible for coloration, as well as nerves, blood vessels and sense organs. Asagi The red at the base of the pectoral fins is … This has anti-bacterial and anti-fungal properties and is continually renewing itself. The pectoral fins … The kidneys also regulate the water content of the body - urine is largely water - and control the type and quantity of salts retained by the Koi. Indeed, in embryo Koi the swimbladder develops as a minute outgrowth from the gut. Scales make up a calcified flexible plate; they contain high levels of calcium and offer an extra line of defense. The digestive tract also serves as part of the immune system creating an environment that is unfriendly to pathogens. As glucose and other simple sugars are used up by the working tissues and organs of the body, the liver releases the stored glycogen, which is broken down into glucose and fuels the working cells. Except a few varieties like Asagi, Shusui, and Aka Hajiro, the pectoral fin should be white. Water and salt movement stops when the solutions are equally concentrated on either side of the membrane.) A koi's skin is covered by a layer of mucus, which not only offers protection against disease but also helps streamline the fish to aid locomotion. The first chamber is simply a thin walled sac with very little muscle. The midbrain also acts as the seat of memory, learning and intelligence, although it is very difficult to assess or quantify degrees of learning and intelligence in Koi. The ability to see above and behind is particularly important because it enables Koi to watch for the approach of enemies while they are feeding. The position of the eyes on the head gives them almost total 360⁰ vision, enabling them to see above and behind, as well as in front and below themselves. Its main function is to store glycogen - a stored form of glucose - and, to a lesser degree, other food products. Quickly … This connecting duct enables Koi to top up the swimbladder by gulping and swallowing air at the water surface. It is important for the formation and storage of red and white blood cells. Thyroid follicles are widely distributed throughout the viscera. Tends to be aggressive, chases after the girls and the smaller koi… As in other bony fish, most of the nitrogenous wastes leave the body in the form of ammonia, which diffuses into the water from the gills. If you use Facebook, you will see your "Like" at Facebook. Eggs may be found in the ovaries throughout the year but the number of mature eggs present is very low when the fish is not in breeding condition. Doroike Mud Pond — Pond dug into the mud used to grow Nishikigoi. In Koi, the pineal organ senses changes in day length and stimulates the release of reproduction as well as activating other glands, such as the thyroid. Koi Fish and Injections of Antibiotics. The pectoral fins are another point that can let down an otherwise good Showa. The thin epithelial layer lining the filamentous gill structures is very thin and allows gas exchange to occur here. All accumulate in injured, inflamed or infected areas of the body, where they repel bacterial or viral invasions, remove dead or damaged tissue, and assist in repairing damaged tissues. Koi are members of a group of fish known as teleosts, literally meaning 'bony skeleton'. The third chamber, or ventricle, has thick muscular walls and is largely responsible for the pumping action of the heart. These blocks are subdivided into V-shaped muscle segments. The symmetry of the head, shoulders, mid-section, tail, and pectoral fins are taken into account, as well as the integrity of the eyes and mouth. There is a set of 4 gill arches on each side of teleosts. Generally, the most important function ascribed to the circulation is transporting oxygen from the gills to the tissues and removing carbon dioxide from the body via the gills. Subsequently enlarges to form the kidneys a pair of nostrils on each side of the in. Cells contain haemoglobin, a red iris internal anatomy, but expandable here. 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