It would be best if you began feeding once they started to move. After three days, they have grown up to one millimeter they start to swim slowly. They take nutrition from eggs sac these days. Just after birth, zebrafish are not swimming they just lay down on the marbles or tank walls for three days. Gentle aeration is required for egg development as well as for babies. So methylene blue can be used to avoid it. Also, recheck the water condition, and try to change the parents.Įggs take three days to make babies but during these three days, some fungal attacks can be seen on the eggs. Provide them with live foods again for a few days. If you got the same results, separate them into the pre-breeding tank again. Then they should stay there for another 24 hours. Sometimes but rarely, they won’t lay eggs due to some reasons. Return the parents to the place where they lived earlier. Probably the eggs may be fertilized by males. EggsĪfter 12 to 24 hours, eggs are scattered on the bottom. This causes females to lay eggs and it happens after twelve hours.Īll the females are not laying eggs simultaneously it happens throughout the day. Once males gather, they chase the females and follow them actively. After four hours, add the males carefully. In the evening, collect the females, and give them a few hours to live in the new environment. So, 14-hour dark / 14-hour light condition is essential. They lay eggs in the morning just after sunrise. Zebrafish are considered as photoperiodic in their breeding. A breeder box also facilitates the same function. Eggs will go through the net and collect at the bottom. Firstly, lay that net two inches above the bottom. Instead of marbles, A piece of a net can use to survive the eggs. Fill the glass marbles up to two inches from the bottom, and the water level is better with two inches from the marble. For that, you can use glass marbles to the bottom. Zebra danios tend to eat their eggs then, eggs should be separated from parents as quickly. The water you are going to add should be dechlorinated and cycled. A small corner filter will clean the water without capturing the eggs. You might use an aquarium heater to regulate the temperature. The water temperature is good at the range of 73 to 80 Fahrenheit. Five to ten gallons are enough.Īdjust the pH from 6.3 to 7.5 using a pH meter. How To Prepare The Breeding TankĪ small tank is suitable for zebra danio breeding as they are small fish. Some fish challenged to distinguish sexually can identify within these two weeks. It also helps to mature eggs in females and sperm of males. It will help to increase their health, activeness and maturity. Quality live foods should provide to them. In these two weeks, males and females should be in separate tanks. The two-week prior to spawning is essential. The usual ratio to spawning is two females to a male. The male fish is slim and the bright color seems to be a bullet. When she sexually grows, her belly area gets rounded as she bears eggs. It is easy to distinguish zebra fish sexually when they mature. Typically, female zebra fish is more significant than same-aged male. How do we distinguish male and female zebrafish If the parents are multi-colored, the children will be as well. If the parents are yellow, the babies will be yellow, too. Usually, babies bear their parents’ body colors. You’re probably aware that zebrafish come in a variety of colors. You are lucky if you can find parents who were successful in previous breeding sessions. Inquire at the pet store whether they are sick or not. The reason is that one-year-old fish are stronger and more productive than smaller fish.Īlso select fish that are free from disease and parasites. However, find at least one-year-old fish as your broodstock. Parents should be in good health to ensure the quality and well-being of their offspring.įour month-old zebrafish can make babies. How do we distinguish male and female zebrafish.
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