First, try to figure out whether or not the conditions are right for your fish to spawn. If she is pregnant, what should I do? Is my Zebra Danio pregnant? 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. When it comes to goldfish, females release unfertilized eggs into the water, whereby the male fertilizes them. Your female Zebra Danios typically have … Some have been known to live as long as four or five years. 21-30 days. For how long are zebra danios pregnant? I think the other one is a male, and this is a female. 0 1. Otherwise, your fish will only become pregnant if there are both male and female fish present. 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 is the pregnancy of a fish? Although it is rare, it is possible to purchase a pregnant goldfish. 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. Danios are small schooling fish. My mom's fish has been pregnant for about 4 months now and we think that's too long to be pregnant for. We've had several for 3 years or so. In an aquarium, Zebra Danios typically live two or three years. A dwarf seahorse, for example, has a gestation period between 3 and 55 days while the surfperch has between three and six months. Danios are egg scattering fishes, and if this is a community tank with other fish, the eggs are likely to be eaten quite fast. How long do Zebra Danios live? I'm going to assume Zebra Cichlid and answer that. I am worried about my Zebra Danio. A Zebra cichlid doesn't get pregnant, she scoops up her eggs into her mouth. Well, first of all you need a male or two to chase her around while she's laying them. She looks like she might explode, her belly is so big! How long is a guppy fish pregnant? Then, try to observe "pre-spawning" behaviors in both your male and female fish. We are concerned about how long they are supposed to be pregnant for. Zebra Danios can’t get pregnant because they do not bear live babies. I assume it's pregnant. It takes about 3 weeks for the eggs to develop into baby fish (known as fry). How long are goldfish pregnant for? It then takes between 2-7 days before the goldfish eggs hatch. Danios will also eat their own eggs if given the chance. She'll lay 200-400 or so. Paul. We came back from vacation 6 days ago and one of them looks like it's going to explode. The new one chases the old one around but they seem happy together. Goldfish, technically, cannot get pregnant. Maybe that way you'll find out what you need to know. 5 years ago. The other poster assumed you meant Zebra Danios and answered that. I was just looking at my fish and I noticed that one of my long-fin zebra danios looks pregnant. 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