Nano aquariums make it easy to place a saltwater, reef, or freshwater aquarium in limited spaces. Consider any fish tank that holds 30 gallons or less water a nano fish tank. These are the best nano aquariums:

Coralife Nano Aquarium Starter Kit

The Coralife BioCube Starter Kit is a sleek, well-designed nano aquarium with both front and side viewing angles. The BioCube kit includes an integrated programmable LED lighting system.

Fluval Flex Nano Aquarium

The Fluval Flex is an excellent choice for keeping freshwater fish. It comes equipped with a 3-stage filtration system. But, it does not come with a heater. The large sponge filter has two pockets in which you can put anything you want. There’s a bag of ceramic media and carbon to start you off.

Tetra 20 Gallon Nano Fish Tank Kit

The Tetra 20 Gallon Nano Fish Tank is ideal if you’re looking to create a traditional freshwater aquarium. It has all the extras needed to get you started. One 20 Gallon Glass Aquarium, one LED hood, one Tetra Mini UL Heater, one Tetra Whisper 20 Filter, one artificial Boxwood Plant Mat, four artificial plants.

Marineland 5 Gallon Portrait Aquarium Kit

The Marineland portrait aquarium kit has a filtration and an LED lighting system. You can switch the lighting from natural daylight to moonlight settings.

Red Sea Max Nano Aquarium

The Red Sea Max features some of the latest technology and a quality build. It has a beautiful design, and it is perfect for a reef show tank. It has a customizable LED light system that you can control over your WiFi network. A filtration and circulation system., An automatic top-off unit with a built-in reservoir. The only drawback is the price. But, given the premium build and items included, some might say that it’s worth it.

Fluval Edge Aquarium

The Fluval Edge aquarium has a powerful, easy-to-use Edge filter with Cycleguard. The kit includes both the Nutrafin Cycle and Nutrafin Aquaplus water treatments. A decorative column hides the LED Lighting, Filtration & Wiring. The lighting system has an on/off, bright daytime, and deep blue nighttime setting.

Here are a few different shapes from Fluval:

Fluval SEA EVO V Aquarium Kit

The Fluval Sea EVO V is a 13.5-gallon glass aquarium that has a cover. It includes an integrated LED lighting system, a safe low-voltage transformer, a circulation pump with an output nozzle, and a foam filter block with a handle.

Fluval SPEC Aquarium Kit

The Fluval Spec nano aquarium kit features an impressive high-output LED light system which generates 20% brighter lighting. It has its own built-in filtration that uses a 3-stage system with oversized mechanical, chemical, and biological media for exceptional water clarity.

biOrb Flow Aquarium

The biOrb Flow Aquarium comes in two sizes – 4-gallon and 8-gallon. The extras included are an air pump airstone and biological filtration. You have two choices with lighting – LED and MCR. It’s safe for use as both freshwater and saltwater nano tanks. It is a stylish little aquarium with a unique filtration system, unlike other nano aquariums.