I had only one in the tank and last week bought another one, I don't know the sex of either of them. How long are goldfish pregnant for? If she is pregnant, what should I do? In an aquarium, Zebra Danios typically live two or three years. None of them have ever looked like this before. There is no one-size-fits-all answer because of the considerable variation in the length of pregnancy between species. The new one chases the old one around but they seem happy together. Then, try to observe "pre-spawning" behaviors in both your male and female fish. Danios are small schooling fish. We came back from vacation 6 days ago and one of them looks like it's going to explode. How long is a guppy fish pregnant? Some have been known to live as long as four or five years. Paul. We've had several for 3 years or so. Danios will also eat their own eggs if given the chance. Maybe that way you'll find out what you need to know. There are many different breeds, with different colours and patterns, and many of these breeds are very popular with aquarium hobbyists. The other poster assumed you meant Zebra Danios and answered that. A dwarf seahorse, for example, has a gestation period between 3 and 55 days while the surfperch has between three and six months. When it comes to goldfish, females release unfertilized eggs into the water, whereby the male fertilizes them. She looks like she might explode, her belly is so big! 21-30 days. Your female Zebra Danios typically have … Well, first of all you need a male or two to chase her around while she's laying them. Danios are egg scattering fishes, and if this is a community tank with other fish, the eggs are likely to be eaten quite fast. I breed zebra danios and I always have pregnant females and never have I've seen one that big I suggest you move her to a temporary tank with heater and filter also some tank water and if she doesn't like pop any eggs in 4 days I suggest you try to diagnose it further she just looks too big How long do Zebra Danios live? My mom's fish has been pregnant for about 4 months now and we think that's too long to be pregnant for. You'll need a shallow tank with large-sized substrate like marbles on the bottom for the eggs to fall through to safety, or else the fish will eat them. First, try to figure out whether or not the conditions are right for your fish to spawn. Although it is rare, it is possible to purchase a pregnant goldfish. Otherwise, your fish will only become pregnant if there are both male and female fish present. It takes about 3 weeks for the eggs to develop into baby fish (known as fry). 5 years ago. We are concerned about how long they are supposed to be pregnant for. I think the other one is a male, and this is a female. It then takes between 2-7 days before the goldfish eggs hatch. A Zebra cichlid doesn't get pregnant, she scoops up her eggs into her mouth. She'll lay 200-400 or so. I was just looking at my fish and I noticed that one of my long-fin zebra danios looks pregnant. I am worried about my Zebra Danio. I'm going to assume Zebra Cichlid and answer that. Goldfish, technically, cannot get pregnant. If you suspect your female danio may be pregnant, it's important to find out for sure, so that you can prepare the tank for the baby fish, called fry. I assume it's pregnant. 0 1. How long is the pregnancy of a fish? They are zebra danios, they lay eggs and don't get pregnant at all. Zebra Danios can’t get pregnant because they do not bear live babies. For how long are zebra danios pregnant? Is my Zebra Danio pregnant? Hello all, I am new to this site today. She scoops up her eggs into the water, whereby the male fertilizes them n't pregnant. 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