Weald Aquatics | Aquarium & Pond Fish Shop in Kent | The Weald Aquatics Blog - Coldwater fish


Coolings Green & Pleasant
Main Road, Knockholt, Kent TN14 7LJ

01959 532 963

Opening times

Monday to Saturday
and Public Holidays: 09:00 - 16:00
Sunday: 10:00 - 16:00

As a pet shop, we are exempt from the government's ban on shop closures. So we cautiously welcome you if you need any supplies during this time. However, whilst in the shop please observe the rules on social distancing in order to keep yourselves, other people and our team safe and well.
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The Borneo Sucker (Pseudogastromyzon myersi)

Blog post written by Jack | 22 October 2016 | Category: Coldwater fish

It's Jack's first blog post, so here's a quick intro by Andy.

"When working in a shop like ours, the most important thing we look for in staff is a passion and enthusiasm for fish. If you’re not into it, this job isn't for you."

"I am very lucky to work with people that are as “fishy” as me. Jack is as enthusiastic as they come and loves his fancy goldfish. Here he walks us through something a little different for the coldwater aquarium, so over to you Jack."

One of my favourites for a Coldwater aquarium has to be the Borneo Sucker (Pseudogastromyzon myersi). With plenty of movement and lots of colour, the Borneo Sucker is easily the stand out fish in a coldwater aquarium.

The Borneo Sucker is also known as the “Hillstream loach” and is a peaceful fish growing to around 6cm. They prefer a cooler temperature between 20 and 24 celsius. It is important to have hiding places as this particular Loach enjoys exploring its environment. Lots of people use cobbles and slate to make various caves and hiding places for them.

This is a really unusual fish to look at. Olive green body covered in small yellow spots and a small black tail. The big appeal is the fact it is almost completely flat, as close to a sting ray as you can get. Another interesting characteristic is the fact it sticks to the sides of the glass and ornaments, its body and fins developed into a “sucker” which gives this fish its grip and name. It is found in fast flowing rivers where its aerodynamic body and adapted fins give it plenty of hold against the strong current. To mimic this environment we recommend an air pump to oxygenate the water similar to the oxygen-rich streams they call home.



The Borneo Sucker in typical pose
The Borneo Sucker in typical pose

The Black Moor

Blog post written by Andy | 04 May 2013 | Category: Coldwater fish

Following on from my last post I decided to do a piece on one of the most popular fancy goldfish available, the Black Moor.

The Black Moor (Carassius auratus) is a fancy breed of goldfish with a velvet black colour and those characteristic "Bulging" eyes. You know when a customer is near the Moor tank because you suddenly hear "Look at the eyes on that fish!!"

Like most fancy goldfish they can reach a length of up to 10" and have an average lifespan ranging from 6 to 20 years. They have large deep bodies and long flowing fins. When young they look like bronze fantails and their black colour and large eyes develop with age. Colours can vary from a copper colour to a metallic grey. A true Black Moor makes a fantastic contrast in a mixed fancy goldfish aquarium.

As with all fancy goldfish, due to their body shape they are not the fastest of swimmers and can be bullied when kept with normal breeds of goldfish. Normal goldfish tend to eat all the food before the Moor has had a look in so I tend to recommend them being kept with other fancy goldfish.

They don't like very fast water movement so go easy with power heads but as they are a type of goldfish you do need decent filtration. They do well in a fairly well planted aquarium and can tolerate a variety of temperatures. As with most fancy goldfish, they can suffer with swim bladder problems if just fed a floating dried food. We find giving them a combination of sinking pellets, frozen food and vegetable wafers really keeps them happy.

Black Moor are a real stand out fish in a cold water aquarium and you can see why they are so popular.


A true Black Moor
A true Black Moor makes a fantastic contrast in a mixed fancy goldfish aquarium


We also have this variant called a Panda Moor
We also have this variant called a Panda Moor. They are quite difficult to get hold of. (At the time of writing this blog, we have four in stock).

Coldwater set-ups are about more than just goldfish!

Blog post written by Andy | 08 March 2013 | Category: Coldwater fish

Lots of people come into the shop who have a coldwater set-up and assume we don't sell coldwater fish. This is because we keep a large variety of fancy goldfish and smaller shoaling fish which customers didn't realise you could keep in a coldwater tank.

If you have a coldwater set-up, don't think you are restricted to just goldfish.... oh no!!

You can get some truly amazing looking fish for a coldwater set-up, fish like Orandas, Ryukin, Lionheads and Fantails. If you want something really different then look at the "goggle eye" fish like Black Moor and Celestial "bubble eyes". We also sell a couple of types of coldwater Loach in both olive green and bright yellow; they look more like coldwater eels than loach! There are even a few that stick on the glass like the Zoolinger Loach and "Chinese Pleco" or "Torpedo fish".

If you have a smaller aquarium or just want a shoal of fish we can also help you. We have several species of fish in lots of different colours and patterns which stay small and are perfect for smaller aquariums. Zebra Danios, Pearl Danios, Gold Zebra Danios, White Cloud Mountain Minnows, Gold Minnows....I really could go on! In fact I have set up a Biorb at the shop full of small coldwater fish which customers say looks amazing.

Over the next few posts I will be highlighting some of these fish and hopefully convincing some of you out there who have a coldwater tank to try something different!!

See you soon.


Coldwater fish
A selection of Weald Aquatics' coldwater fish