How do silver arowana divide male and female?

Silver arowana is a large carnivorous fish, the scientific name double moustache hyoid fish, its whole body flashing silver scales, stylish and domineering appearance has been so that fish lovers can not extricate themselves, and the personality is very mild in all bony hyoid fish, mixed culture will not bring a lot of trouble to the owner, let's take a look at how the silver dragon fish divides male and female!

Breeding habits of silver arowana

Silver arowana will lay eggs one to three times in a season, about 200 to 300 each time. Male fish will hold fertilized eggs in their mouth within 40 to 50 days after spawning. During this period, the parent fish will almost not eat, but concentrate on guarding the child. When the larvae grow to 3 to 4 centimeters, the parent fish will spit it out. The hatched larvae carry yolk sac, and the larvae can develop into young fish that can swim and eat after living on the yolk sac for about 8 days.

How do silver arowana divide male and female?

1. Body size: generally speaking, the size of male silver arowana is longer than that of female silver arowana under the same circumstances, and it seems that males of most species are larger than female individuals.

2. Ventral fins: the ventral fins of male arowana are usually sharp and long, while female arowana is not very long and is not as long as male arowana.

3. Abdomen: in mature arowana individuals, the female silverfish has eggs, so the abdomen is relatively swollen, which is also a more direct distinction between male and female.

4. Head type: under natural conditions, the male will contain all the fertilized eggs in the mouth for hatching, so the male silver arowana looks larger in terms of head type.

5. Cheek: a beautiful A word can be seen on the cheek of female silver arowana, and the arrow part is shorter than that of male, while the A word of male silver arowana is irregular and the arrow part is longer.

How to raise silver arowana?

1. Fish tank preparation: silver arowana is a large fish, so the fish tank is at least 1.5 meters long, 0.5 meters wide and 0.7 meters high. At the same time, the fish tank must be capped, because the silver arowana belongs to the upper swimming fish and likes to jump to avoid choking to death when no one jumps out of the tank.

2. New fish into the tank: when the new fish is just bought back, the fish tank should completely eradicate the chlorine in the water. If there are conditions, it is best to get water back from the original tank of the new fish. It is best to get back 1 big 3, so as to facilitate the adverse reaction of the new fish to the sudden change of the environment.

3. Bait and domestication: the newly introduced small silver dragon fry will begin to be domesticated from the second day. Live blood worms can be used (soak in 3% salt and 5 g / L furacilin aqueous solution for 15 minutes before feeding). The operation should be very careful and the feeding amount should be eaten in 20 minutes.

4. The right time to change material: the fry of Yinlong fish were mainly fed with live blood worms within 10 days old, changed to quick-frozen blood worms after 10 days old, and gradually changed to shrimp in the third month. it was fed 5 times a day in the first month, 4 times in the second month, 3 times in the third month and 2 times in the fourth month.

5. Adjust the density: the growth rate of silver arowana is fast, so the density must be adjusted according to the growth condition, preferably every other month, the first time is 150 fish per tank, the second time is 70 fish per cylinder, the third time is 25 fish per cylinder, and then gradually reduce the number of stocking.

6. water quality management: silver arowana is suitable for living in weakly acidic water. Be sure to keep the pH of the water between 6.5and 7.5. change the water every three days, 1/3 or 1/4 each time, and clean filter materials such as filter cotton and white cotton regularly.