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A larger fantail goldfish is capable of laying about 1,000 baby eggs in one spawn, but only a fraction of the eggs will survive. Once the mama fantail has laid her eggs and the male has fertilized them, look for the clear eggs -- these are the ones that will become the small fry.
Just so, how do you know if a fantail fish is pregnant?
When your male goldfish are ready to spawn, they will develop tiny white bumps known as “spawning tubercles” around their heads, gill covers, and pectoral fins. If you notice these white spots on your male fish, there is a greater chance that your female fish may be pregnant. Spawning tubercles may be hard to see.
Likewise, people ask, how do you know if a fish is going to lay eggs?
To tell if your fish is having babies, start by identifying the females and watching for any mating-related behavior, like when a male chases a female around energetically. Next, check the females for a pregnancy bulge at the back of the abdomen, which may be rounded or have a boxy shape.
“, goldfish don't actually give birth to “live” young that swim away as soon as they are born. Goldfish lay eggs, which attach to objects in the tank or pond, such as leaves, and stay there until the goldfish babies (or “fry”) hatch.