Silver Arowana
Because Silver Arowana (certain introduction) is popular in Asia It is raised as a Feng Shui fish, so it is particularly popular with aquatic enthusiasts. The shape of the arowana resembles the "dragon" in Pangu legend, and the body color of the silver arowana is also very special, so the silver arowana is one of the important reference fish in our country.
The body of the silver arowana is elongated, with flat sides, a fan-shaped tail, and the dorsal fin and buttocks are in the shape of a bow, extending backward to the base of the caudal peduncle. The lower jaw is longer than the upper jaw and has a pair of shorter and thicker whiskers. There are five rows of large scales neatly arranged on the fish body of its treat, which shine silver in the light. Each fin emits a bright red or orange light under light. The body color of juvenile fish is bluer, with red and blue edges on the back and buttocks. The edges of the golden dragon's scales are golden yellow, and each fin is golden red. The body color of the red dragon is golden yellow, the edges of the scales are golden red, the mouth and gill cover have dark red patches, and each fin is dark red. The body of the silver dragon is silvery white, the body color of the black dragon is silvery white with a hint of light bluish purple, and the back is black.
Silver Dai has an exceptionally slender and slim body shape. The position of the mouth is located upward, and the cleft extends to the back edge of the eye socket. The lower jaw is more protruding than the upper jaw, and several linear lateral line organs are lined up in front of it. There is a pair of tentacles at the end of the snout. In wild individuals swimming in the natural environment, the tentacles of adult fish can be extended to 3-4cm. However, individuals under artificial breeding often only grow to 1-2cm due to stunted growth. The teeth of the lower jaw are particularly developed, and the comb-like conical teeth arranged between the left and right jaws are extremely small and sharp. The distance between the teeth is extremely narrow. Not only the premaxillary bones, but also the dentary bones, the parasphenoid bone of the mouth and the forming bones of the tongue are all particularly developed. This was developed to crush giant crustaceans and beetles in one bite. In addition, the left and right jaws focus more on the hunting performance of easy-to-catch prey rather than the biting force of their teeth.
Gill rakers spread out into spines. Gululu's big eyes are close to the front edge of the palate, and his vision is particularly good. The muzzle is short. The nostrils are located above and in front of the eyes, especially close to the tip of the muzzle. The dorsal fin and anal fin are exceptionally long, and the beginning of the anal fin is further forward than the dorsal fin. The first spine of the pelvic fin spreads beyond the beginning of the anal fin. The pectoral fins are particularly prosperous. The sides of the body are covered with five rows of large and beautiful round scales. The lateral line runs from the posterior edge of the new part of the posterior gill cover to the caudal peduncle. Body height is approximately one-fifth of body length. Male fish aged five to eight, about 90 centimeters, are much taller than female fish. The middle part of the body can even be close to two centimeters. Such a powerful connotation, but no matter how expensive the Asian arowana is, it is better thanNone. Unfortunately, it is now difficult to find silver rings with this kind of connotation.
The gray-green body is delicately mixed with silvery white. If krill are fed to young, sub-adult and adult fish in rearing, due to the effect of carotenoids, red stripes will be embedded in the dorsal fin and anal fin, and the outer edges of the scales on the body side will also be inlaid. Will form red color. When the fish matures, the red color gradually becomes lighter and becomes smoked silver or white gold. The edges of the dorsal fin and anal fin have a stronger white flavor, making the already huge body appear even larger. Due to gender differences, the female fish has a slightly darker complexion and looks dark in color. The backs of both males and females are gray-green, which makes them look particularly comfortable when viewed as a background. However, the warm mirror surface on the side of the body makes it difficult to separate male and female fish under the light except during the growth period. There are also a small number of albino individuals with the so-called platinum-gold and silver-colored complexion variation that remains among the breeding individuals.
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