Share the selection and breeding of the blue background



Share the selection and breeding of the blue background

For a long time, the so-called "blue background" overwhelmingly spreads in the market, and only a small part of them can really be called "blue background" or "over-back", and it is even rare to have both.Some fish friends believe that over-back gold arowana is less difficult to identify than red dragon. In fact, picking a high-quality blue-back over back is a very common skill and requires courage and luck.Therefore, to distinguish the subtle differences in fish performance at various stages and to summarize the construction methods of various color quality expressions are of great significance for judging the quality of fish. First of all, "blue background" and "over-back" should be understood separately. The so-called "blue bottom" can be understood in two ways: one is the inner part of the scales except the first and second scale frames, and the second is the second scale frame and its inner side are collectively called the "bottom" except the first scale frame.Because the definition of the second type is too harsh, as long as the fish in the first sense is called "blue bottom over the back", according to this understanding, the blue back can be divided into gold wireThere are two types of hair color and gold belt color. The texture of the blue part of the scale is also very important.Almost all juvenile goldfishes have a slight blue luster, and a considerable part of them have silky golden hair color in their childhood.Because the golden dragon of the back will show different degrees of blue in its childhood, and the genes of the blue background are genetically weaker, it is difficult to accurately determine the color development direction of a fish. But the Blue Dragon Fish will always have some differences: 1.The blue texture is a velvety smooth blue, and there is less of a cold sense of metallic shades such as iron blue (most of these fish are thick-framed blue bottoms after being grown into fish). 2.The blue area is vast and occupies the entire area from the second scale frame to the bottom of the scale. High-quality individuals should see no scale even in the fifth row. 3.The phase boundary with gold is very unique. Gold seems to be hooked on the outermost edge of the scale with a very thin pen, but it feels on the same plane; if the gold is looser gold sand or feels protruding from the bottom of the scale, thenIt is more likely to eat boxes. 4.The true blue back is often not seen very early. The 20CM individual is 100% bright in the fifth row, and the small bead scale is more than 50% bright, which is basically suitable.If the sixth row of scales at this size has reached a perfect fish, but the gold is easy to disperse after growing up, becoming a gold and blue compatible body, it will be very difficult to lock the frame. In terms of body shape, if you want to pick a foolproof blue arowana, personally think that a round face is more safe than a sharp face.Although there are also some blue-faced dragonfish with outstanding blue hair color, but when reviewing the wild population, they are mostly round-faced.In terms of the pedigree of the Golden Dragon, the round-faced fish may be recognized as a purebred, and the sharp-faced fish are more mixed with other bloodlines. After the middle fish, it is easy to lack stamina in terms of scale brightness, range, and color, And grow faster than round-faced fish. Over the back gold around 30CM, growth and hair color began to appear in a state of trade-off, this phenomenon is mainly manifested in the fifth row of scales.We must pay attention to the fullness and brightness of the fifth row of scales at 20CM.At 20CM, if the gloss of the fifth row of scales is similar to the brightness and texture of the scales elsewhere in the body, it is more likely to become a blue arowana. On the contrary, if the brightness of the fifth row of scales is significantly higher than that of the other rows of scales, it seems thatThe layer of varnish is average, and only the gloss range of the outer edge of the second scale frame, when it grows to 30CM, it is easy to appear a long and narrow turbid scale area between the first scale frame and the scale bottom, and the fifth row of scales that have already appeared glossyThe bottom will also be relatively dim, which is the "color loss" phenomenon of the over-back gold in the middle fish stage.Fish of this quality are quite common in the market today, and they should be carefully selected when buying.In various arowana competitions, this type of fish is generally not used in fish competitions.This kind of fish will restore the luster of the fifth row of scales to the adult stage, and the majority of the sixth row of scales are walking through the frame.However, this fish has a very low chance of becoming a positive blue arowana because of the scale and color of the scales that have experienced a lot of repetitions in the middle of the fish. In fact, as long as the scales on the blue bottom are clearly layered, they can be regarded as successful individuals. If it is a male, it is more difficult to retain the blue color.In this sense, the blue background should have at least three manifestations: 1.All blue background 2.Layered blue background 3.Blue background blooming with gold. The first is the rarest, the second is the second, and the third is more common. Let me talk about the problem of feeding methods.Personally think that if you want to keep a clean blue background for a long time, it is necessary to pay attention to the following points: 1.The water temperature should not be too high. Maintaining 26-27 degrees is most beneficial for maintaining the scale bottom. 2.Do not feed too much. My approach is to feed twice a day, and only feed for 4 minutes each time; stop eating 1-2 days a week. 3.Keep the water quality stable and fresh for a long time. 4.The brightness of the ambient color should be moderate, with lake blue being the best. 5.It is best not to use only plant lights for lighting, it is better to use halogen lights, moonlight blue lights and plant lights at the same time. 6.The feeding environment should preferably have sufficient brightness, and the daily lighting time should be no less than 8 hours; maintain regular work and rest. 7.Feed more vegetarian insects. These are the methods I summarized in the breeding, and they have been followed for a long time.In general, it is to control the metabolic rate of fish at a medium level, so that hair color and growth can proceed at a uniform speed (negatively, the future size of the fish is unlikely to be particularly large, but the back is originally a small arowana); keep the light adequate and the environmentThe color is medium brightness (it is not too bright or too dark); the water quality is fresh and stable: the food is diverse, and some plant foods are supplemented by secondary intake.Of course, these methods must persist for at least 6 months in order to see obvious effects.Since adopting these methods may increase the difficulty of rearing, it is best to be cautious when starting a dragon.
=======The following is what Yuyou said=======
likemagic said: Reply @ICE: Thank you ice sister
Ice Cream said: Yes, there is progress
Good devotion
zp850621 said: Learned.
Northeast Shenlong said: long knowledge

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