Goldfish care guide covering tank size requirements, filtration, feeding, water quality, and common health issues.
By Elena Vargas, Freshwater Aquarium Specialist
Tank
20 gallons (first fish) + 10 gal each
Temp
65–72°F (18–22°C)
pH
7.0–8.4
Diet
Omnivore
Level
Beginner
Social
Peaceful community
Resource Hub
2 guides covering every aspect of goldfish care — organized so you can find exactly what you need.