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.

Lice and worms in goldfish

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Cartoon of a goldfish being attacked by a worm

Lice and worms are common goldfish tank parasites, both of which can potentially lead to health problems in your fish and so, should be dealt with as soon as a potential issue arises.

What are goldfish lice and worms?

Fish tank lice and worms are parasites that rely upon goldfish to thrive and reproduce, and will often be most prevalent in overcrowded tanks and on fish that have recently been bought from a pet store.

It is of course important to ensure that you do not let your tank become overcrowded, and that you quarantine any new fish for 14 days to a month before you introduce them to your main tank.

Tapeworms, anchor worms and body lice are three of the most common parasitic problems that can affect goldfish, and these three invaders are sometimes found together.

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How to protect your goldfish pond from invasive plants

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Cartoon of a plant chasing a goldfish

This is a guest post from Ricky at swallowaquatics.co.uk. 

Remember how Seymour thought Audrey II was the most amazing plant he’d ever found in Little Shop of Horrors?

If you haven’t seen the film, spoiler alert – the plant starts eating everyone.

Of course, it’s unlikely that invasive plants in your goldfish pond are likely to commit murder! But they could be harmful to your other plants, taking over the living space and restricting their ability to grow and feed.

So, how do you keep these nasties out of your pond?

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Hornwort: The Ultimate Guide

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Hornwort live aquarium plant

Hornwort (ceratophyllum) is a popular aquarium plant. It is also known as Coon’s Tail – for the obvious reason that it looks a bit like the tail of a racoon. Hornwort is a floating plant that does not put down roots, though it can be anchored down into the substrate of the tank with weights. … Read more

Anubias barteri plants

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Anubias Barteri plants

Anubias barteri is a flowering plant that hails from the west of Africa. In the wild, it can be found growing in streams, rivers and marshes.

Anubias barteri has a lush green coloration and large, flat individual arrow-shaped leaves located at the end of sturdy stems. The plant can grow to as much as a foot across and a foot tall.

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How to Add Goldfish to a Pond

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Fish knocking on door with briefcase in hand

When you have finally reached the stage where you are ready to add goldfish to your pond, it can be very tempting to rush out and buy a large selection of fish immediately! However, it’s important to handle the introduction of your goldfish slowly to avoid placing too much of a strain on the natural … Read more

Decorating a Goldfish Pond

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Two cartoon goldfish carrying a plant

Once your pond is built and watertight, you can start adding the goldfish pond equipment, fixtures and eventually, live plants! It may prove helpful to only half-fill your pond with water until after you have situated your decorations and fittings, in order to provide easier access to the bottom of the pond and allow you … Read more