Signs that a female guppy is nearing birth include:
- A larger, darker gravid spot on the abdomen.
- A noticeably rounder, bigger belly.
- Restlessness or erratic swimming.
- Seeking hiding spots among plants or decorations.
- Behavioral changes, such as reduced appetite.
Gestation typically lasts 21–30 days. Provide a breeding box or dense plants to protect the fry once they are born.