For tropical fish, you can accommodate more fish per litre: the ratio is 1 litre per 1cm of fish. So, you could safely hold two 10cm fish, three 5cm fish and five 3cm fish safely in a 50 litre tank. You might think fish are relatively easy pets to care for, but if you really want them to flourish, purchasing the best fish tank you can afford will improve their health and wellbeing. In fact, unlike with a pet dog or cat, there are far more considerations when purchasing a new aquatic home for your fish.

Fluval’s Edge 2.0 combines eye-catching style with a compact design. Its square shape and modest dimensions make it easy to fit on a corner table or cabinet, and, visually, it almost looks as if the tank is floating. The Tetra Starter Line is a great choice for – as the name suggests – those looking for their first tank.The lighting's pretty good too - you can switch between a Bright Day White, or a Cool Blue Moon lighting - your fish will look incredible and your plants will thrive.

You’ll also want some kind of lighting setup for your environment so you can see your new pets night and day. However, bear in mind that lighting is essential for keeping corals in a saltwater tank, as corals have specific requirements for intensity and duration of lighting throughout the day. The same is true of heating systems which tropical fish may need during British winters.Or what about a stylish curved glass front that gives you an unobscured view of its underwater inhabitants in all their glory? An automatic reminding system, ensuring you never forget essential aquarium care processes such as water changes or filter care. High performance LED lighting for day and night viewing - (2 x 12 x 0.2w Bright White LED, 1 x 6 x 0.2w Blue Moon LED) If you want to future proof your aquatic set up, this 252 litre tank from Fluval is a great option. The tough, borosilicate glass tank sits on top of a Hampshire Oak (or Slate Grey) cabinet that makes the perfect centrepiece to any room. Having a cabinet built in means you won’t have to risk placing your new tank on your existing furniture – plus, messy cables can be hidden away out of sight.

The Interpet Insight LED 64 is a seamless modern designed Aquarium with unobstructed viewing pleasure complete with an energy efficient Day and Moonlight LED lighting system and filtration. Complete with 2 white and 1 blue LED strips, internal filter and heater. In terms of features, you get a top-of-the-line adjustable filter to keep things clean – something Fluval is known for. Meanwhile, a powerful LED light keeps things bright with a 6500K temperature and 120° beam that evenly illuminates all the plants and fish in the tank. The day and night illumination modes mimic natural patterns, too, which is a nice touch. There’s also a feeding door for easy access, but sadly there’s no in-built heater. All the fish tanks listed below are suitable for either freshwater or saltwater fish, and, even if you’re only planning to have the one fish, you’ll want a capacity of at least 23 litres (or five gallons) so they can enjoy a decent habitat. A simple, safe and tidy unique simple low voltage complete power supply for the lighting and illumination of the aquarium.Key specs – Tank dimensions (HWD): 62 x 33 x 37cm; Water capacity: 54 litre; Other sizes? 30 litre & 105 litre; Tank extras: Filter, heater, light The Bluetooth-connected LED lighting system is pretty special, too. Controlled via the Fluval SmartApp, it can be tailored to suit any particular fish or plant, mimic real world light conditions on a 24-hour cycle or just provide some stunning visuals. The quiet-running filter is a boon if you’re planning to keep the tank in a bedroom, and the specification is ample for a tank of this size. Crucially, given the 54 litre capacity, it’s very reasonably priced – tanks this size can cost three times as much – which is why we rate it so highly.