Goldfish
Carassius auratus
Also known as: Common Goldfish, Fancy Goldfish
The Goldfish is the most popular pet fish in the world, first domesticated in China over 1,000 years ago. Despite common misconceptions, goldfish can live for decades with proper care and grow much larger than most people expect.
Max Size
14 inches (35 cm)
Lifespan
10-15 years, up to 40
Depth
0-5 meters
Water Type
freshwater
Scientific Classification
- Class
- Actinopterygii
- Order
- Cypriniformes
- Family
- Cyprinidae
- Species
- Carassius auratus
Habitat & Distribution
Habitat
Distribution
Behavior
Goldfish are social, intelligent fish that interact with their environment and owners. They are cold-water fish that should not be kept with tropical species. They produce a lot of waste and need excellent filtration.
Reproduction
Goldfish spawn in spring when water warms. Males chase females, who release thousands of sticky eggs on plants. Eggs hatch in 4-7 days depending on temperature.
Aquarium Care Guide
Minimum Tank Size
20 gallons
Care Level
Easy
Temperament
Peaceful
Temperature
65°F - 75°F
Diet
Omnivore - pellets, flakes, vegetables, live foods
Can Goldfish Live With...?
Explore detailed compatibility guides for Goldfish with other popular aquarium fish.
Conservation Status
Main Threats
- Invasive in wild
- Poor care in captivity
🎉 Fun Facts
- Goldfish have a memory span of at least 3 months, not 3 seconds
- They can recognize their owners and learn tricks
- The oldest recorded goldfish lived 43 years
- They can see more colors than humans, including ultraviolet
- Goldfish were originally silver - gold color was bred selectively
