How long is a goldfish pregnant?

Does fish give birth through mouth?

Sometimes the female fish will carry the fertilized eggs in her mouth, or the male and female will trade off, which is called biparental mouthbrooding.

Is goldfish male or female?

Female goldfish usually have fat, round little bellies, full of eggs. Males show two distinct physical characteristics: 1) Roughened pectoral fins 2) raised bumps on their operculum (see picture below). This is most common in comet goldfish.

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