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The Goldfish Tank
  • Gold Fish
    • Care
    • Types
    • Breeding
  • Equipment
    • Plants
    • Tanks
    • Ponds
    • Kit
  • Food
    • Goldfish Food
  • Facts
    • Polls
    • Fun
  • Health
    • Goldfish Care
    • Biology
    • Diseases

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.

Pond Fish That Can Survive Winter

2023-12-232022-10-14 by Lewis German
Pond fish in the water

Goldfish are the most popular pond fish around the world due to their domestication, ease of care and survivability during all different types of weather conditions. However, there are other, less popular fish that can survive winter conditions that you may be able to keep in your pond. What are cold water fish? Cold water … Read more

Categories Ponds Tags fish pond, winter pond Leave a comment

How do Goldfish Survive the Winter?

2025-06-212022-10-13 by Lewis German
pond frozen over with snow

For us, winter may seem like a very tough time. There is little food, it gets dangerously cold, the weather is dangerous and it is dark all the time. If we find it hard to survive, then how can our goldfish friends survive, especially when they are trapped in water? In this guide, we will … Read more

Categories Goldfish Info Tags Goldfish, goldfish in winter 1 Comment

Goldfish Anatomy: The Full Guide

2025-06-042022-10-04 by Lewis German
Goldfish Internal Anatomy

Studying the anatomy of a goldfish may help you to better understand their behaviour and lifestyle. Why do they do the things they do, how do their bodies work and what are all the correct names for the different parts of a fish? We aim to answer these questions in this guide. Key Takeaways: History … Read more

Categories Biology and Behavior Tags Goldfish, Goldfish Anatomy Leave a comment

Do Fish Freeze in the Winter?

2025-06-212022-09-30 by Lewis German
jan haerer

During winter time, you may notice shallow pools, ponds and streams freeze over. Some bodies of water can even freeze completely, and can even trap fish, freezing them alive!  But can they survive this process, and how do fish cope with being frozen? Do fish freeze in winter? Naturally, no, the fish themselves should not … Read more

Categories Ponds Tags Fish, Fish Freeze, Fish Freeze in the Winter Leave a comment

A Complete Guide to Pond Snails

2023-12-232022-09-23 by Lewis German
greg rosenke

You may have been recommended by someone to add pond snails to your pond; you may have heard from others that they are bad and are vermin. But what are pond snails, are they good or bad, why would you want to keep them, and in what ways can you benefit from keeping them? What … Read more

Categories Ponds Tags Guide to Pond Snails, Pond Snails 5 Comments

When do pond fish come out of hibernation?

2025-06-212022-09-21 by Lewis German
Goldfish popping out of the water

You may know that fish enter a state of dormancy over autumn and winter, that they enter hibernation below certain temperatures, but is this true, what does it mean and what should you do about it? Do pond fish go into hibernation? Yes, temperate and coldwater fish species like goldfish enter a dormant state over … Read more

Categories Ponds Tags Fish, hibernation, pond fish 7 Comments

A Guide to the Different Types of Pond Algae

2023-12-232022-09-09 by Lewis German
Green Algae in pond

There are thousands of different types of algae found all over the world, so chances are, you will definitely encounter some of them if you have a pond. But, what are some of the common types you may see, are some of them dangerous and why are they growing? What is pond algae? Algae is … Read more

Categories Ponds Tags Different Types of Pond, Pond Algae Leave a comment
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Latest Comments

  1. Trish Schultz on Can Axolotls Live with Goldfish?2023-11-16

    Thank you very much for your very helpful article. I have been working in an aquarium shop part time and…

  2. Marie Rabago on Can Goldfish Eat Cat Food2023-11-13

    Goldfish can eat cat food occasionally, but it's not an ideal staple diet due to its high meat content, potential…

  3. Mike Frye-Henderson on Pearlscale Goldfish; Care Guide, Lifespan, and More2023-11-11

    Hello, we have a 10 year old pearlscale that's sick. It's not able to get off the bottom of the…

  4. GW on Black Moor Goldfish; Care Guide, Lifespan, and More2023-11-10

    My Blackmoor goldfish is 5 years old and has been living in a rescue centre while I was in hospital.…

  5. Star on The Different Types of Goldfish Ponds2023-11-09

    The spelling you’re looking for is Aerate! Your pond sounds awesome!

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