Breeding profile
| Scientific name | Method | Planning level |
|---|---|---|
| Danio rerio | Egg scatterer | Beginner |
Why keepers choose this species
They are hardy, readily conditioned and often spawn at first light. Adults usually eat accessible eggs.
Set up around the fish
Use a mature tank with mesh, marbles or dense spawning media that lets eggs fall out of reach. Keep flow gentle and cover the tank.
Spawning and parental behaviour
Condition the group, move selected fish to the spawning setup and remove adults after the event. Record the date rather than relying on a fixed hatching prediction.
Fry and grow-out
Larvae are small and require appropriately sized first foods before progressing to larger foods.
Important limit: Hardy adults do not make newly hatched fry tolerant of ammonia, overfeeding or abrupt water changes.
Before you start
- Confirm the exact species or strain and its adult care requirements.
- Prepare a cycled fry-safe filter and separate grow-out capacity.
- Arrange appropriate first foods before pairing adults.
- Record parentage, dates and any uncertain hybrid ancestry.
- Identify realistic, responsible homes for juveniles.