The golden pheasant, also known as the yellow-bellied fish, is a species of pupa. Its taxonomic status is a unique side branch. There is currently no accurate Chinese name for the family. In Australia, where the country of origin is located, Golden Pelicans are released to various places. Because of their adaptability, their populations have settled everywhere. Regardless of fishing or aquaculture, Golden Pelicans are popular targets.
Biological characteristics
1.1 Morphological characteristics The golden pheasant has a typical cricket-shaped character, with a dark head, and the mouth gradually becomes sharp; the adult fish protrude prominently and the mouth is upper; there are some obvious openings in the lower jaw, the caudal fin is round; the first dorsal fin is high In the second dorsal fin; anterior to the pelvic fin, born just below the pectoral fins; anal fins with fin spines. The back color ranges from dark brown to olive green or bronze with lighter yellow and white sides and abdomen. The fins are yellow and red or white edges may appear on the pelvic fins. The scales are irregularly surrounded by golden scales and are therefore called yellow-bellied fish. The body color of the fish is related to the turbidity not found in the living environment. The golden sputum is fissured. There are teeth above and below the upper and lower shins, pear bones, and pharynx. They are dense and strong, and the sputum is short and long with fine grains. The length of the gut is less than half the full length.
1.2 Inhabitation habits The goldfish can adapt to the new environment quickly, and the fish can be found in different conditions. It prefers to live in a warm, turbid, still or micro-flowing river bend. It is called "very hardy" fish in Australia. Calendula is a wide temperature fish, its survival temperature is 3 ~ 37C, the optimum growth temperature is about 23C. The requirements for dissolved oxygen are relatively low for gold crucibles, and they remain intact at this mg/l. The appropriate pH is 70-75.
1.3 Food habits In the natural world, Golden Carp is a partial carnivorous omnivorous fish that mainly ingests aquatic insects, mollusks, small fish, and plant seeds. The predatory behavior of golden plucked insects and small fish and shrimps was similar to that of squid and black plover. However, individuals within the species do not kill each other and occasionally chase.
1.4 Growth habits Golden cricket grows faster, with the largest individuals reaching 76,23, and the common one has a body weight of about 5. The fry can grow to about 150 in the current year and 500 to 1600 in the following year. The difference in individual size mainly depends on the abundance of palatability food. Females grow faster than males and breed for up to one year in market specifications.
1.5 Breeding habits The golden age of sexual maturity is generally 3 to 4 years old for females, 5 million males for spawning, and about 200,000 for fecundity. There are many factors that affect the spawning of golden pheasants, such as water temperature, water level, and light. Breeding seasons reproduce populations for long distance genital migration. When the water temperature reached 23-26C, spawning began to occur and the spawning period lasted longer, generally spawning at night. The eggs of Jinjinci water hardened in water, with a diameter of 33-42, and the surface is a thin and transparent fleece. It is not sticky and is a floating egg. The early development is rapid, and the larvae can be hatched after 24-33 hours at a water temperature of 20-31C. The total length of the fish fry is 32 to 50, which can be floated. The fry develops completely after about 3 to 5 days. Since the golden pheasant can reach sexual maturity in still water, it cannot reproduce, so Australian scientists use HCG and CPG to induce ovulation and oviposition. At present, it is considered that the average hatching rate can reach 875% with 500IU/HCG, and the effect is better. 200IU/HCG plus 2~5CPG can also be injected. After spawning at 25C for 26-28 hours, the same effect can be achieved.
2. Seedlings of culturing fish fry have smaller individuals when hatched. As the yolk sac is quickly absorbed, it is easy to cause stunting. The key to this stage is the abundant palatability of bait, with smaller nauplii better. Therefore, it is necessary to arrange the ponds according to the plan, so as to improve the water quality and moderate fertilizer. The practice of Australian farmers is: A winter dry pond, shallow plowing of the bottom of the pool in the spring; B fertilization and fertilization a week before the fish, organic fertilizer and inorganic fertilizer application; C fish hatching about two weeks after hatching (with release film To the swimming stage), the pond is stocked at a density of 100 fish. D When the fish species grows to about 3 (about one month), you can drain the seedlings and raise them for a day before transport. During the cultivation of E seed, attention should be paid to monitoring the water quality, preventing disease and treating diseases.
3. Artificial rearing management In China, farming golden leeches must not only adapt to local conditions but also pay attention to their ecological characteristics and create conditions to make them adapt to the new habitat as soon as possible. In the country of origin, Australia, two kinds of farming methods are adopted. One is a wide variety of thin and thin harvesting. The stocking density in reservoirs and ponds is generally no more than 200 fish species per mu. The source of the feed is artificial compound feed, and part of the feed comes from the biological resources of the fish. Proliferation; the second is the intensive conservation of small water bodies, which are mainly fish species. In the land, concrete pools, glass tanks or plastic water tanks, there are several hundred fishes and thousands of fishes per cubic meter of water, keeping the water running normally, or Constant temperature, automatic monitoring equipment, feed artificial feed, high production efficiency, short feeding cycle.
Under the conditions of existing cultivation in China, it is not too difficult to breed golden leeches. As long as it is gradual and gradual, it will certainly achieve the purpose of introduction, domestication and promotion. A water quality requirements are tender and tender. Jin Hao likes refreshing water quality, but it is not as unclear as the eel, and does not require water to “fertilize.†Jin Ye also requires water to “fatâ€â€” plankton-rich. "Clear and fat" looks somewhat antagonistic. In fact, plankton is cultivated by moderate fertilization (such as horse dung, cow dung, and big grass), and at the same time it is equipped with an aerator or new water. B feed requires palatable and sufficient. During the fish breeding stage, red worms can be fed from other water bodies, or they can be fed with bean dregs, micro-grain feed, duckweed, chopped green fodder, fly maggots, and bean cakes. The bait should be built to fall into the bottom of the water and spoil the water. C. Strengthen management, pay attention to changes in water quality, prevent escape, prevent theft, prevent disease, and solve problems in time. At the same time, attention should be paid to the management during the winter, and the depth of the winter pool should not be less than 18. Shallow ponds are excavated in deep pits. Each 500 fish has to have a fish nest of 3 square meters in size to facilitate habitat for fish species.
Biological characteristics
1.1 Morphological characteristics The golden pheasant has a typical cricket-shaped character, with a dark head, and the mouth gradually becomes sharp; the adult fish protrude prominently and the mouth is upper; there are some obvious openings in the lower jaw, the caudal fin is round; the first dorsal fin is high In the second dorsal fin; anterior to the pelvic fin, born just below the pectoral fins; anal fins with fin spines. The back color ranges from dark brown to olive green or bronze with lighter yellow and white sides and abdomen. The fins are yellow and red or white edges may appear on the pelvic fins. The scales are irregularly surrounded by golden scales and are therefore called yellow-bellied fish. The body color of the fish is related to the turbidity not found in the living environment. The golden sputum is fissured. There are teeth above and below the upper and lower shins, pear bones, and pharynx. They are dense and strong, and the sputum is short and long with fine grains. The length of the gut is less than half the full length.
1.2 Inhabitation habits The goldfish can adapt to the new environment quickly, and the fish can be found in different conditions. It prefers to live in a warm, turbid, still or micro-flowing river bend. It is called "very hardy" fish in Australia. Calendula is a wide temperature fish, its survival temperature is 3 ~ 37C, the optimum growth temperature is about 23C. The requirements for dissolved oxygen are relatively low for gold crucibles, and they remain intact at this mg/l. The appropriate pH is 70-75.
1.3 Food habits In the natural world, Golden Carp is a partial carnivorous omnivorous fish that mainly ingests aquatic insects, mollusks, small fish, and plant seeds. The predatory behavior of golden plucked insects and small fish and shrimps was similar to that of squid and black plover. However, individuals within the species do not kill each other and occasionally chase.
1.4 Growth habits Golden cricket grows faster, with the largest individuals reaching 76,23, and the common one has a body weight of about 5. The fry can grow to about 150 in the current year and 500 to 1600 in the following year. The difference in individual size mainly depends on the abundance of palatability food. Females grow faster than males and breed for up to one year in market specifications.
1.5 Breeding habits The golden age of sexual maturity is generally 3 to 4 years old for females, 5 million males for spawning, and about 200,000 for fecundity. There are many factors that affect the spawning of golden pheasants, such as water temperature, water level, and light. Breeding seasons reproduce populations for long distance genital migration. When the water temperature reached 23-26C, spawning began to occur and the spawning period lasted longer, generally spawning at night. The eggs of Jinjinci water hardened in water, with a diameter of 33-42, and the surface is a thin and transparent fleece. It is not sticky and is a floating egg. The early development is rapid, and the larvae can be hatched after 24-33 hours at a water temperature of 20-31C. The total length of the fish fry is 32 to 50, which can be floated. The fry develops completely after about 3 to 5 days. Since the golden pheasant can reach sexual maturity in still water, it cannot reproduce, so Australian scientists use HCG and CPG to induce ovulation and oviposition. At present, it is considered that the average hatching rate can reach 875% with 500IU/HCG, and the effect is better. 200IU/HCG plus 2~5CPG can also be injected. After spawning at 25C for 26-28 hours, the same effect can be achieved.
2. Seedlings of culturing fish fry have smaller individuals when hatched. As the yolk sac is quickly absorbed, it is easy to cause stunting. The key to this stage is the abundant palatability of bait, with smaller nauplii better. Therefore, it is necessary to arrange the ponds according to the plan, so as to improve the water quality and moderate fertilizer. The practice of Australian farmers is: A winter dry pond, shallow plowing of the bottom of the pool in the spring; B fertilization and fertilization a week before the fish, organic fertilizer and inorganic fertilizer application; C fish hatching about two weeks after hatching (with release film To the swimming stage), the pond is stocked at a density of 100 fish. D When the fish species grows to about 3 (about one month), you can drain the seedlings and raise them for a day before transport. During the cultivation of E seed, attention should be paid to monitoring the water quality, preventing disease and treating diseases.
3. Artificial rearing management In China, farming golden leeches must not only adapt to local conditions but also pay attention to their ecological characteristics and create conditions to make them adapt to the new habitat as soon as possible. In the country of origin, Australia, two kinds of farming methods are adopted. One is a wide variety of thin and thin harvesting. The stocking density in reservoirs and ponds is generally no more than 200 fish species per mu. The source of the feed is artificial compound feed, and part of the feed comes from the biological resources of the fish. Proliferation; the second is the intensive conservation of small water bodies, which are mainly fish species. In the land, concrete pools, glass tanks or plastic water tanks, there are several hundred fishes and thousands of fishes per cubic meter of water, keeping the water running normally, or Constant temperature, automatic monitoring equipment, feed artificial feed, high production efficiency, short feeding cycle.
Under the conditions of existing cultivation in China, it is not too difficult to breed golden leeches. As long as it is gradual and gradual, it will certainly achieve the purpose of introduction, domestication and promotion. A water quality requirements are tender and tender. Jin Hao likes refreshing water quality, but it is not as unclear as the eel, and does not require water to “fertilize.†Jin Ye also requires water to “fatâ€â€” plankton-rich. "Clear and fat" looks somewhat antagonistic. In fact, plankton is cultivated by moderate fertilization (such as horse dung, cow dung, and big grass), and at the same time it is equipped with an aerator or new water. B feed requires palatable and sufficient. During the fish breeding stage, red worms can be fed from other water bodies, or they can be fed with bean dregs, micro-grain feed, duckweed, chopped green fodder, fly maggots, and bean cakes. The bait should be built to fall into the bottom of the water and spoil the water. C. Strengthen management, pay attention to changes in water quality, prevent escape, prevent theft, prevent disease, and solve problems in time. At the same time, attention should be paid to the management during the winter, and the depth of the winter pool should not be less than 18. Shallow ponds are excavated in deep pits. Each 500 fish has to have a fish nest of 3 square meters in size to facilitate habitat for fish species.