When it comes to goldfish, females release unfertilized eggs into the water, whereby the male fertilizes them. The other poster assumed you meant Zebra Danios and answered that. Although it is rare, it is possible to purchase a pregnant goldfish. I assume it's pregnant. There are many different breeds, with different colours and patterns, and many of these breeds are very popular with aquarium hobbyists. Then, try to observe "pre-spawning" behaviors in both your male and female fish. We came back from vacation 6 days ago and one of them looks like it's going to explode. She looks like she might explode, her belly is so big! 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. Is my Zebra Danio pregnant? Danios will also eat their own eggs if given the chance. We are concerned about how long they are supposed to be pregnant for. 0 1. Well, first of all you need a male or two to chase her around while she's laying them. Paul. We've had several for 3 years or so. Maybe that way you'll find out what you need to know. Danios are small schooling fish. She'll lay 200-400 or so. I am worried about my Zebra Danio. Some have been known to live as long as four or five years. Zebra Danios can’t get pregnant because they do not bear live babies. Goldfish, technically, cannot get pregnant. I think the other one is a male, and this is a female. Danios are egg scattering fishes, and if this is a community tank with other fish, the eggs are likely to be eaten quite fast. If she is pregnant, what should I do? There is no one-size-fits-all answer because of the considerable variation in the length of pregnancy between species. Hello all, I am new to this site today. In an aquarium, Zebra Danios typically live two or three years. 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 A Zebra cichlid doesn't get pregnant, she scoops up her eggs into her mouth. 21-30 days. First, try to figure out whether or not the conditions are right for your fish to spawn. A dwarf seahorse, for example, has a gestation period between 3 and 55 days while the surfperch has between three and six months. My mom's fish has been pregnant for about 4 months now and we think that's too long to be pregnant for. I had only one in the tank and last week bought another one, I don't know the sex of either of them. I was just looking at my fish and I noticed that one of my long-fin zebra danios looks pregnant. How long is the pregnancy of a fish? I'm going to assume Zebra Cichlid and answer that. 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