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What fish can I add to my goldfish's 5-gallon tank for company?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish | Male | 0 lbs

Looking for some cool fishes to accompany a goldfish in a 5 gallon tank. Please help Jameson (my fish) beat his case of loneliness!! We appreciate the weird and quirky looking ones! Help!

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1 Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on August 10th, 2017

Choose fish that are cold water fish. Goldfish do best in water that is between 65 and 75 F. Weather, or Dojo, loaches, Rosy Barbs or Zebra Danios are all potential tank mates. The loaches do best in groups of 3 or more. If you decide to add fish, consider a larger tank, at least 20 gallons. The reason is that goldfish produce a large bio load that can quickly lead to poor water quality. They also grow rapidly depending on the type of goldfish you have. A tank that is too small may cause stunted growth which can greatly decrease the life span.

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