Aequidens rivulatus is a kind of large-scale ornamental fish. It is a kind of large-scale ornamental fish. Its adult body is 25cm long and originates from South America. The shape is gorgeous, and it is named for its high orange color forehead and its dark red tail fins with golden edges. It has both ornamental value and food value. It can be raised in aquarium tanks and cultured in ponds. It has strong adaptability to water environment, short breeding cycle, easy to solve feed, and high economic value. Therefore, it has good breeding. prospect.
First, reproduce
1. Male and female identification of red-tailed crown males is larger than females and has a brightly coloured body. The dorsal fins and anal fins are long and pointed; female reproductive holes are larger and rounder than males.
2. The broodstock has a self-matching habit of selecting broodstock. In nature, when females are alone in the corner of aquariums, they occasionally bite or use their bodies to move rocks or rubble. This is when the females are cleaning the spawning ground, indicating that they are about to spawn. At this time there will be a male in the vicinity of the protection of female fish, not to allow other males to approach, and sometimes also establish spawning grounds with the female. In this case, the broodstock can be fished out to hatch in other fish tanks, or other fish can be removed.
3. Reproduction method Breed cylinder size 100cm45cm45cm, put some tiles or stones at the bottom of the tank. The water temperature is maintained at 26°C to 28°C, the pH is between 6.5 and 7.5, and the dissolved oxygen is not less than 6 mg/L. Females spawn on tiles or stones and males follow ejaculation. Females spawn about 1,000 to 5,000 eggs at a time.
4. Incubation method Fertilized eggs hatch in 2 to 3 days in the fish tank. After 5 to 6 days, the larvae will be free to swim. During this period, the females kept guarding the larval fish and watched the larvae until the larvae were more than 1 cm in length and could escape the predators; the males had been guarding against the enemies in the vicinity of the females, but it was able to swim when the fish were out of the membrane. opened. In order to increase the hatchability of the fertilized eggs and prevent the broodstock from swallowing the eggs, the fertilized eggs may be incubated separately, and the tiles and stones adhering to the fertilized eggs may be placed in an aquarium of the same quality as the parent fish tank, and the broodstock may also be removed. Put it in another aquarium.
Keep the environment quiet while hatching. Try not to walk around the breeding ground and stick paper on the cylinder wall. The cylinder port is capped to reduce outside interference.
Second, rearing
1. Feeding methods After larvae are hatched, they can start feeding by moving around. At the beginning, the larvae or small blisters can be fed four times a day; half a month later, they can be fed with red worms (claw horns); For compound feeds, feeds with higher protein content are preferred. The red-tailed crown grows fast and can reach sexual maturity within ten months of breeding. At this time, the body length is more than 15cm.
2. The water quality requirements of the red-tailed crown are not strict with the water quality, and the dissolved oxygen is about 6 mg/L. The soft or hard water with weak acidity can reach the weak alkali. Aquarium tanks are changed once a day, but they can also be changed once every 2 to 3 days. If raised in a pond, the temperature of the pond should reach 20°C or more and then stocking. When the temperature drops to 20°C in autumn, the fish must be kept indoors for rearing. General outdoor stocking begins in June and is captured at the end of October to prevent frostbite and freezing.
3. Precautions The color of the red-tailed crown is affected by feed, environment and light. To make the body beautiful, it is necessary to feed fresh fish such as small fish and shrimp, and to maintain sufficient light. If the nutrition of the diet is not balanced, the adult fish will have tail sag and affect the appearance. The red-tailed crown is very good, especially when it is stimulated by outsiders, it will jump out of the cylinder and cause casualties, so it is best to add a cap on the cylinder. In addition, if the water temperature is often lower than 18°C ​​during the breeding process, the aquatic organisms on the fishes are prone to produce watery molds, which may cause death of a large number of fish. In order to enhance the disease resistance of the red-tailed crown, complex vitamins or other drugs can be regularly added to the diet.
First, reproduce
1. Male and female identification of red-tailed crown males is larger than females and has a brightly coloured body. The dorsal fins and anal fins are long and pointed; female reproductive holes are larger and rounder than males.
2. The broodstock has a self-matching habit of selecting broodstock. In nature, when females are alone in the corner of aquariums, they occasionally bite or use their bodies to move rocks or rubble. This is when the females are cleaning the spawning ground, indicating that they are about to spawn. At this time there will be a male in the vicinity of the protection of female fish, not to allow other males to approach, and sometimes also establish spawning grounds with the female. In this case, the broodstock can be fished out to hatch in other fish tanks, or other fish can be removed.
3. Reproduction method Breed cylinder size 100cm45cm45cm, put some tiles or stones at the bottom of the tank. The water temperature is maintained at 26°C to 28°C, the pH is between 6.5 and 7.5, and the dissolved oxygen is not less than 6 mg/L. Females spawn on tiles or stones and males follow ejaculation. Females spawn about 1,000 to 5,000 eggs at a time.
4. Incubation method Fertilized eggs hatch in 2 to 3 days in the fish tank. After 5 to 6 days, the larvae will be free to swim. During this period, the females kept guarding the larval fish and watched the larvae until the larvae were more than 1 cm in length and could escape the predators; the males had been guarding against the enemies in the vicinity of the females, but it was able to swim when the fish were out of the membrane. opened. In order to increase the hatchability of the fertilized eggs and prevent the broodstock from swallowing the eggs, the fertilized eggs may be incubated separately, and the tiles and stones adhering to the fertilized eggs may be placed in an aquarium of the same quality as the parent fish tank, and the broodstock may also be removed. Put it in another aquarium.
Keep the environment quiet while hatching. Try not to walk around the breeding ground and stick paper on the cylinder wall. The cylinder port is capped to reduce outside interference.
Second, rearing
1. Feeding methods After larvae are hatched, they can start feeding by moving around. At the beginning, the larvae or small blisters can be fed four times a day; half a month later, they can be fed with red worms (claw horns); For compound feeds, feeds with higher protein content are preferred. The red-tailed crown grows fast and can reach sexual maturity within ten months of breeding. At this time, the body length is more than 15cm.
2. The water quality requirements of the red-tailed crown are not strict with the water quality, and the dissolved oxygen is about 6 mg/L. The soft or hard water with weak acidity can reach the weak alkali. Aquarium tanks are changed once a day, but they can also be changed once every 2 to 3 days. If raised in a pond, the temperature of the pond should reach 20°C or more and then stocking. When the temperature drops to 20°C in autumn, the fish must be kept indoors for rearing. General outdoor stocking begins in June and is captured at the end of October to prevent frostbite and freezing.
3. Precautions The color of the red-tailed crown is affected by feed, environment and light. To make the body beautiful, it is necessary to feed fresh fish such as small fish and shrimp, and to maintain sufficient light. If the nutrition of the diet is not balanced, the adult fish will have tail sag and affect the appearance. The red-tailed crown is very good, especially when it is stimulated by outsiders, it will jump out of the cylinder and cause casualties, so it is best to add a cap on the cylinder. In addition, if the water temperature is often lower than 18°C ​​during the breeding process, the aquatic organisms on the fishes are prone to produce watery molds, which may cause death of a large number of fish. In order to enhance the disease resistance of the red-tailed crown, complex vitamins or other drugs can be regularly added to the diet.
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