Gold fish.

Glossary of Pond Goldfish

Golden Gold Fish, Size: Natural at Rs 25/piece in Howrah

If you dump your pet goldfish into a lake, it will grow into an enormous pest - The Washington Post

Goldfish Care (Carassius auratus)

14,700+ Goldfish Stock Illustrations, Royalty-Free Vector Graphics & Clip Art - iStock

Red Ryukin Goldfish - Carassius auratus

5,000+ Black Gold Fish Stock Photos, Pictures & Royalty-Free Images - iStock

Caring For Goldfish - Tips to Help You Care for Your Pet Goldfish

Golden Fish Cartoon Stock Illustrations – 5,481 Golden Fish Cartoon Stock Illustrations, Vectors & Clipart - Dreamstime