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At the same time, to pick a healthy, disease-free, bright-coloured body, the male must be larger than the female, and the female must be an individual whose abdomen is significantly enlarged, otherwise the breeding may not be successful. The specification may be 503,535 cm; the water temperature is slightly higher than usual 1 to 2°C, preferably 26 to 28°C, the pH of the water is 6.8 to 7.2, and the hardness of the water is 120 to 150 ppm. Breeding does not require aeration and oxygenation. It is most important to keep the environment quiet. It is even more difficult to use filtration equipment.
The rest of the arrangement and conditions are the same as those of fish farming aquariums. After careful selection of the broodstock, the males and males were put into the breeding box at a ratio of 1:1. After living for a period of time, they began to prepare for spawning and breeding. The male fish had nesting behavior.
After finding a suitable position in the breeding aquarium, the male fish began to float to the surface and swallow the air to build a floating foam fish nest. Since Blue Starfish have the habit of building a foam nest prior to spawning, it is best to place some floating large-leaved aquatic plants on the water, and it is also possible to place a plastic foam plate to make nesting easier. Its built bubble nests are relatively large and loose (a diameter of 5 to 15 cm). Looseness is due to their nests that often contain no clumps or broken leaves.
In the male nesting process, the females are generally still at rest but do not swim near the foam nests at times, seemingly encouraging. After the nesting is completed, the males start chasing the females. At this time, the body color of the broodstock, especially the male fish, changes rapidly and often changes from bright blue to dark green in a matter of seconds. If you are disturbed by humans, you will immediately return to the normal blue tone.
The male fish will gnaw at this time, wooing the females with various dancing postures, tempting the females to enter the foam nest and jointly performing the production work. The males bend the body and embrace the female fish. The male and female fish are all bent into a “C†shape. The fish touched the female abdomen with a head, and after a few intense hugs and tumbling in both pairs, the females were excited and the eggs were discharged into the floating nest. The males then ejaculated and fertilized the eggs.
The fertilized egg is white and transparent, and the particles are suspended in the foam fish nest. The male and female fish are repeatedly tumbled and spawned repeatedly (7 to 10 times) for a duration of about 1 to 2 hours before the female can empty all eggs. Blue Star is a larger tropical ornamental fish, and it is a prolific fish. It has a large number of spawning eggs. Females can produce 800 to 1200 eggs each time. Therefore, they are not very valuable in fish. . After the females have spawned, they are free to nest and hide in the breeding box. Resting in an invisible place, they do not like to swim. Male fish have the habit of taking care of hatching eggs, allowing them to stay in breeding aquariums to protect their nests and protect their eggs.
Occasionally, fertilized eggs fall from the nest, and the male catches it cautiously and spits it back to the nest. The female fish swims near the fish's nest in such a time, and the male fish also drives away. The female is not allowed to approach the buoyancy nest and will bite the female fish and even bite the female bite. Therefore, once spawning is completed, the female fish must be fished out again. On the second day after spawning, the eyes of the fertilized eggs appeared. On the third day, the larvae hatched. The newly hatched larvae have a bright body color. The swimming organs have not yet fully developed and have no free swimming ability. They can only be attached to the foam nest and rely on the body. There are yolk sac with oil balls maintained. The oil ball disappeared on the fourth day and the larvae moved on the fifth day.
Altitude: high altitude area light, clean air, environment close to original condition, no industrial pollution. With an average elevation of 1160-2900m, the central health center has a strong uv light, which produces the natural pollution-free apple, which conforms to the concept of a modern green diet.
Temperature: moderate temperature can avoid the chance of fruit tree encountering disease. The average temperature in ningxia is 8.4 degrees Celsius, which has an important influence on the growth, development, yield and quality of apple. The piedmont apple is thriving in such a good environment.
Humidity environment: moderate amount of rainfall provides necessary conditions for apple's growth. The annual rainfall in the central health region is 186 millimeters. The fruit is slow to grow and the fruit is hard and hard, which fully guarantees the fruit's sugar content and the relatively average size of apples.
Sunshine condition: apple is the fruit tree, the central health area of the whole year is nearly 3,800 hours, is beneficial to the Apple Fruit coloring. The piedmont apples are red and bright.
Temperature difference factors: ambassador apple nighttime respiration weak temperature gap between day and night, consume less organic matter, the accumulation of organic matter during the day more, that apple store down a large number of glucose sugar candy, etc have better taste. The average diurnal temperature difference between apple and apple is 14 degrees centigrade, and the larger diurnal temperature difference ensures the sweet and delicious characteristics of the apple.
Other factors: frost can make apple blossom and fruit, which can cause frozen flower jelly, which is bad for apple's production. The piedmont apple has been kept at least 167 days without frost for the whole year, which minimizes the influence of apple on yield and quality.
Blue Starfish reproduction
Before the blue starfish reach sexual maturity, male and female characteristics are not obvious, and the sex is difficult to distinguish. Only after careful observation can we compare them: male fish are brighter in color and females are more bleak; males have larger dorsal fins, dorsal fins and anal fins. The tip is pointed, while the female has relatively small dorsal fins. The dorsal fins and anal fins are relatively rounded at the back; males are not full on the abdomen, while females are fuller on the abdomen. The male silk filiform pectoral fins are clearly orange-red and female. The base of the filiform pectoral fin is not distinctly orange-red. Bluestar fish generally reach sexual maturity after 6 to 7 months of growth. It is best to choose a fish with a body length of about 10 centimeters or between 12 months and 20 months of age as a broodstock, so its fertility is strongest ( Fish that are too old are not ideal for reproduction.