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Goldfish Info

All good goldfish keepers take the time to learn about their pets. Knowing more about goldfish helps us to take better care of them.

Why not start by learning the 12 mistakes most new goldfish-keepers make?

You can also explore diseases, like swim bladder disease, and learn how to prevent them.

Plus, do you know the difference between goldfish and koi? Where goldfish come from? And whether or not they have tongues?!

Our Goldfish Facts & Info articles are where you can learn all of this and much more about your goldfish.

Why is my goldfish sitting at the bottom of the tank?

2021-02-13 by Sara Jane Hales
A goldfish sitting at the bottom of a tank

Goldfish shouldn’t spend long periods sitting at the bottom of their tank. If they are, it may be the sign of a problem.

Categories Diseases Leave a comment

Male or female goldfish? How to tell (with pictures)

2021-01-16 by Sara Jane Hales

What are the physical differences between male and female goldfish? And how do they behave when spawning?

Categories Biology and Behavior Leave a comment

Are goldfish edible? Don’t even think about it!

2021-01-082020-12-13 by Sara Jane Hales
Can you eat goldfish?

Technically goldfish are edible… but you wouldn’t want to go there!

Categories Facts Leave a comment

Do goldfish have brains? It’s NOT a stupid question!

2021-01-082019-12-01 by The Goldfish Tank
Goldfish hole in the head

Not all animals have brains, but goldfish do.

Categories Biology and Behavior Leave a comment

Why do goldfish die? And how to keep them alive…

2021-01-122019-10-05 by The Goldfish Tank
Dead goldfish

Understand why goldfish die and what you can do to stop it.

Categories Biology and Behavior Leave a comment

Do goldfish have tongues? The truth might surprise you!

2021-01-082019-09-05 by The Goldfish Tank
Do goldfish have tongues?

Goldfish don’t have tongues. But they do have something similar.

Categories Biology and Behavior Leave a comment

How big do goldfish grow? Some can be massive!

2021-01-082017-11-22 by The Goldfish Tank
Goldfish Care: How to take care of goldfish, including tank size

The biggest goldfish ever was almost 19 inches long!

Categories Biology and Behavior 1 Comment
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