Males generally like to show off themselves in front of the female. The main thing is that the male has a long, dark pectoral fin. The abdomen of the female fish appears to be full and swollen due to the original egg, and the shape of the head is also more rounded than that of the male fish. The oviduct of the female fish protrudes during the oviposition period. The vas deferens of the male fish is concave.
2. Arowana can survive for about 18 years. The growth period used for their growth and maturation is very long. Generally, females need to be 6-12 years old and males must be 5-16 years old to breed. And not all arowanas can reproduce in aquariums, as does Arowana. The Arowana species currently breeding in aquariums are silver dragons, red dragons, blue dragons, and Australian arowana species.
Arowana and cichlids share the same species of fish, and they are also naturally matched fish. Arowana in nature breeds fish eggs in their mouths. After hatching, the males will look after the larvae. When encountering an enemy attack or startle, the broodstock will contain the larvae in the mouth until the danger passes. This will continue until the larvae can feed on their own.
First of all, Arowana species should have a wide body of water for reproduction. Better breeding tanks are best for tanks of more than 2 meters in 2009060 or 25010060.
Preparation of broodstock: Since Arowana has its own pairing habits, they do not like to match them artificially. Therefore, several juveniles can be reared together (5-7 years) from their childhood, and they can be freely paired. You can also place mature fish in the big sink on both sides of the sink, separate them with partitions, and make holes in the partitions to facilitate water circulation on both sides. The fish will adapt to the situation. When you find out that the arowana has estrus, they will pull apart the partitions. At this time, they will make special rear-end collisions. Then they will tear each other's fins, especially the anal fin to the caudal fin. Arowana will be frightened and jump, or collide, and even cause dragons to fall off and bleeding. Such damage will not pose a threat to the life of Arowana within a short period of time. Therefore, everyone must be patient. A few days later, if the two arowanas began to calm down, and began to swim slowly with intimate close-fitting performances, the match was successful. If the fight is still too bad, it means the pairing is not successful. You should check whether the paired fish is not mature yet. Is there anything that should not be in the water? Then keep them separately and pair them again.
Water quality management: Arowana pairs will have injuries, so water quality management is extremely important in reproduction.
It should be noted that the feeding of bait should not be excessive, and must be taken in time.
When signs of illness are found, a medicated bath treatment should be carried out immediately and care should be taken to prevent other fish infections. As Arowana is extremely sensitive to drugs, the amount of drugs to be administered is much less than usual. We will mention this in the disease of Arowana. During the medicated bath, pay attention to changing the water more than usual.
The pH is maintained at 6.2-7.2 to prevent hyperacidity and the water temperature is 26-28 degrees Celsius.
When you do these things and see the close couple of aquariums close together and stop somewhere in the bottom of the aquarium, this is where they choose to spawn. Quickly find things to cover the shade, so that you can prevent frightened dragon fish, and finally to spawn.
When you see the male fish put his eggs in his mouth, he can wait patiently for hatching. From 0 to 15 days after spawning, the females will start to drive away from the males. This may be to force the males to leave the spawning ground and to go to the landlords who are suitable to raise the juveniles. However, if the action is too intense, the male fish may swallow the fish, so the female may have to be isolated or removed when necessary, but be careful not to scare the male fish, otherwise it may swallow the fish. At about 26 to 28Â°C, after about 60 days, the fry will enter and exit the male fish's mouth. The fish gills slowly release their juvenile fish and show their love and care. It will take about 90 days. Juveniles will have less in and out of the fish dad's mouth. At this time, you can fish the squid quietly, and be patient when fishing. Because other little guys will surely hide in the mouth of fish dad for a long time, you can wait slowly. Males generally hold 40 eggs, but in the end there are only a dozen or so small fish. It shows that the breeding of arowana is really not easy.
From the beginning of spawning, the broodstock will stop feeding until the juveniles leave the male fish and will not eat, so a spawning breed will cause great damage to the male fish. If the feeding before breeding is not good enough, the male fish will be so weak or even die, so pay attention to the pre-breeding preparations. Experiments on artificial hatching of fish eggs have not progressed so far, so males have had to work hard all the time.
The screw system contains cortical screw, cancellous screw and Cannulated Screw. Torx and Hex pattern are available. The material is Alloy Titanium or Stainless Steel. The screw use asymmery thread to increase the holding force. Locking screw use four-thread design for quick screw fixing. The screw has self-taping and self-drilling features.
Various products of Bone Screw, providing product images and basic parameters with each High Quality Bone Screw; We are a professional Chinese manufacturer of Bone Screw, and look forward to your cooperation!
We strive to provide superior benefits to professionals and patients through the development of reliable products.
Bone Screw,Orthopedic Bone Screws,Cortical Screws,Cannulated Screw
Shandong Hangwei Orthopedics Medcial Instrument Co., Ltd. , http://www.hangweimedical.com