Dit deel is nog niet in het Nederlands beschikbaar; je ziet voorlopig de versie in het Engels.
In het kort
- Goldfish grow fast; plan the aquarium for their adult size.
- Bowls and small containers are not suitable; they need a large tank with strong filtration.
- They produce a lot of waste, so water quality needs close attention.
- They are social and can be kept with compatible goldfish.
- Feeding small amounts often helps protect water quality.
The juvenile stage runs from hatching to about 1 year of age. Goldfish grow quickly; many juveniles are dark at first and develop their colors over time.
What is happening in this stage?
- Growth is fast, with a clear increase in size in the first year.
- Colors may change and intensify.
- They are active and curious, constantly sifting the substrate for food.
What should you do differently?
- Aquarium: A large tank with strong filtration suited to adult size, fully cycled before fish are added.
- Diet: Small goldfish food, a little at a time several times a day.
- Setting: Rounded substrate and sturdy decor; fancy goldfish in particular have delicate eyes and fins.
- Tank mates: Keep them with goldfish that have similar needs, not with tropical fish.
What should you monitor?
- Water values (ammonia, nitrite, nitrate)
- Appetite and swimming
- Growth and whether the tank is still big enough
- Fin and scale condition
Expected behavior
Constantly sifting the substrate, coming to the surface when expecting food, cruising as a group and color changes are normal at this stage.
Reminders
- Weekly partial water change and water test
- Filter maintenance (rinse filter media in tank water)
- Tank planning as they grow
Next stage
From about 1 year of age your goldfish enters the adult stage.
De leeftijdsgrenzen zijn bij benadering; verschillen binnen een soort (zoals grootte bij honden) kunnen de overgangen vervroegen of vertragen.
Deze inhoud is algemene informatie en vervangt geen onderzoek of diagnose door een dierenarts. Maak je je zorgen over de gezondheid van je dier, neem dan contact op met je dierenarts.