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. The special cells in the gill membrane selectively absorb salts back from the water, thus helping to maintain the correct salt balance within the blood and body tissues of the Koi. The pectoral and pelvic fins also control fine movement by counteracting the propulsive forward motion caused by the exhalation of water from the gill covers, thus enabling the Koi to remain motionless. (Interpreting optic nerve signals as sight is a function of the midbrain.) The spleen, a compact purple-red organ, lies very close to the gut and liver. Tends to be aggressive, chases after the girls and the smaller koi… The spinal cord extends almost the entire length of the body and is connected to many of the major nerves. It is an embracing term that includes the blood, plasma and vessels through which these body fluids flow. 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. It is an elongated oval sac that lies along the top of the body cavity, just beneath the vertebral column and kidneys. (Salts is used here in the chemical sense, rather than simply referring to sodium chloride, or common salt.) This is extremely thin and in fact lies above the scales. The lateral line is a sensory organ used to detect vibrations in the water. Water and salt movement stops when the solutions are equally concentrated on either side of the membrane.) Akame - (AH kah may) An eye with a red iris. In some doitsu Koi, the lateral line may be seen as a conspicuous line that runs along the middle of the fish, from just behind the operculum to the tail. It however remains the IM injection of choice if the visual damage must remain as little as possible. During the development of the embryo in Koi, the brain and spinal cord are formed as a tube. Anal fins - The Anal fin is located on the anus area of fishes. They receive the nervous impulses from the nostrils and interpret them as smells. The air bubble passes into the gut and is pumped in to the swimbladder by a duct. 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. 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 ovaries are relatively large and irregularly shaped organs in mature female Koi. The head of a Sanke usually comprises of two colors, which are white and red, and is devoid of any Sumi markings. The original Standard fin Koi and, developed more recently, the Butterfly or Longfin Koi. I dont winter worry anymore, not since I. Powered by vBulletin® Copyright ©2000 - 2021, Jelsoft Enterprises Ltd. Cantigny C Not-a-butterfly on the butterfly weed.JPG (1/1), Are typical koi more hardy than butterfly koi. The anal fin, like the dorsal, is used for stabilization. There is a double row of delicate filaments in a V-shaped arrangement along the posterior surface of each arch. Adrenal Gland - The adrenal cortical tissue is represented by the interrenal cells. (Koi keepers generally feed Koi with floating pellets and sticks, but this is simply to enjoy seeing their spectacular livery as they surface to feed). Hajiro -- (hah GEE row) A black koi with white on the tail and … Such a shape streamlines the Koi and minimizes turbulence as it moved through the water. Examining your koi’s fins, you will notice that one has a more pointed pectoral fin near the head which is solid in color, this indicates a male koi. The main function of the midbrain is to interpret messages relayed to it by the nerves, particularly those concerned with movement and the attitude of the body in the water. Under the epidermis is the dermis and this is where the scales are formed. From here it drains through the bile duct into the intestine, where it is mixed with the solid waste. The product is known as bile and collects in the gall bladder. After Check out you will be taken to a page to download your Ebook. Like the Showa variety, sumi (black) on an Utsuri should essentially appear as bands of color on the nose, face side and throughout the body, as well as in the pectoral fin joints. 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. In cross section, the nostrils are seen to be joined by a U-shaped tube. 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