Gold fish

Goldfish 🐟

A goldfish (goldfish) is a small freshwater fish commonly kept as a pet. Originally domesticated in ancient China over 1,000 years ago, goldfish are one of the most popular aquarium and pond fish worldwide.

Key facts

• Scientific name: Carassius auratus
• Lifespan: 10–20 years (sometimes even longer with proper care)
• Size: Typically 6–8 inches, but can grow much larger in ponds
• Diet: Omnivorous (flakes, pellets, vegetables, small insects)
• Habitat: Freshwater aquariums or outdoor ponds

Types of goldfish

There are many varieties, including:

• Common goldfish – simple, streamlined body
• Comet goldfish – longer tail, more active swimmers
• Fantail – double tail, rounded body
• Oranda – known for its bumpy “head growth” (wen)
• Black moor – black color with telescope eyes

Care basics

Goldfish are often thought of as “easy pets,” but they actually need:

• A large tank (not a small bowl)
• Strong filtration (they produce a lot of waste)
• Regular water changes
• Cool, clean water (not tropical temperatures)

If you want, I can help you set up a goldfish tank, choose the right type, or explain why bowls are actually bad for them.