From garden ponds filled with Koi Carp to the humble goldfish bowl – the UK is a nation of fish lovers.
The Pet Food Manufacturers’ Association (PFMA) say there are an incredible five million indoor fish tanks in Britain.
Around 10 per cent of British households own pet fish – making them the third most popular animal to welcome into our homes after cats and dogs.
There’s plenty 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 interesting finned friends.
One thing you should be aware of is that some fish favour the bottom of the tank, while others are happier nearer the surface - combine the two and you’ll have a well-balanced aquarium.
Here are 10 of the best and brightest top and bottom dwellers.
17. Golden Wonder Killifish
Golden Wonder Killifish are shimmering, golden-green surface fish with a calm yet predatory nature - best not put smaller fish in with them or they might be gobbled up. They need a covered tank due to their jumping ability and prefer calm, plant-rich environments. | Canva/Getty Images
18. Dwarf Gourami
Dwarf Gouramis are peaceful, colorful fish that - in common with most Gouramis - frequently visit the surface to breathe air. If you hear a funny noise coming from your aquarium it'll be one of these unusual fish gulping air as they have a lung-like organ allowing them to breathe out of water. Their shimmering hues and calm behavior make them an attractive, peaceful top-dwelling fish option. | Canva/Getty Images
19. Black Line Pencilfish
The Black Line Pencilfish - and close cousin the Brown Pencilfish - get their name from their unusual swimming style, as they move around the tank as a 45 degree angle, similar to that of a pencil being written with. They often venture away from the surface to have a wee hide in vegetation, but always come back, drifting along the surface in search of floating snacks. | Canva/Getty Images
20. Threadfin Rainbowfish
Threadfin Rainbowfish are delicate, slender fish with long, flowing fin extensions. They’re peaceful, top-swimming fish that display beautiful iridescent colors, adding elegance and motion to planted community tanks. | Canva/Getty Images