From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish need far more room to thrive - replace it with a tank) – the UK is a nation of fish lovers.
According to the Pet Food Manufacturers’ Association there are an incredible five million indoor fish tanks in Britain.
That equates to around 10 per cent of British households owning pet fish – putting them third after cats and dogs when it comes to most popular pet.
There’s lots of choice when it comes to adding fish to (well prepared and correctly set up) home aquariums, with pet shops offering a bewildering range of colourful and interesting finned friends.
But you’ll definitely want a few bottom-feeders in your freshwater tank - fish (and other creatures) that will hoover up any food that sinks to the bottom and keep algae under control to make sure the water stays crystal clear.
Here are 15 of the best that should top your list.
5. Kuhli Loach
For something a bit unusual, add a few Kuhli Loach to your community tank. These peaceful, eel-like fish thrive in groups and enjoy burrowing in the substrate. They are nocturnal and prefer a well-planted tank with hiding spots. They are excellent at cleaning up leftover food but should be fed sinking pellets to ensure they receive adequate nutrition. | Canva/Getty Images
6. Clown Loach
Another fish that's great for cleaning up in large aquariums (they need a tank of at least 75 gallons), the spectacularly-coloured Clown Loach love a home with plenty of hiding places. Highly sociable, they are happy in groups of at least five. | Canva/Getty Images
7. Yoyo Loach
One of the more playful and sociable bottom-feeders, the Yoyo Loach is easy to identify thanks to its unique, maze-like markings (that resembling the word 'yoyo'. Not one for small tanks - they can grow up to six inches in length - they love darting around the aquarium, although that play can see them nip at more slow-moving fishy friends. | Canva/Getty Images
8. Panda Garra
Another good choice for keeping smaller aquariums spick and span is the Panda Garra. They can get aggressive but only when challenged, so will get along well in a tank with more placid fish. They are well known for their talent at controlling algae, keeping water clear. | Canva/Getty Images