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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.

Do Fish Freeze in the Winter?

2025-10-052022-09-30 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?

2025-08-142022-09-21 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

Natural Setups and Goldfish in the Wild

2025-07-282022-09-02 by Lewis German
Goldfish in natural pond

We are believers that keeping fish, or any animal as natural as possible, is the best way to ensure their health and longevity.  However, this has its limits, as we will discuss, what may be considered a natural pond or what your definition is, it may still not be suitable for goldfish to survive within. … Read more

Categories Ponds Tags Goldfish in the Wild, Natural Setups Leave a comment

A Guide to Goldfish Pond Mates

2025-10-042022-08-19 by Lewis German
Goldfish looking above the water surface

If you have a pond with goldfish and still have plenty of room for more, but want to spice things up a little, then there are a few different fish that can live with them. In this list, we will give some examples of fish that can live with goldfish, and we will give some … Read more

Categories Ponds Tags Goldfish Pond, Goldfish Pond Mates, Mates Leave a comment

Blanket Weed: What is it & How to Get Rid of it

2023-12-232022-08-02 by Lewis German
blanket weed

Blanket weed, or water silk, is very common in many ponds around the world, especially ponds in cooler climates and with plenty of water movement. The weed grows wild and can quickly overtake a pond.  It’s important to know how to identify it, what it can do, and ways of removing it.  As we will … Read more

Categories Ponds Tags Blanket Weed 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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