Best 5-Gallon Aquariums of 2026

The Koller Products 5-Gallon Aquarium Kit with LED Lighting and Power Filter is a fun and rewarding way to teach children about pet ownership. With energy-efficient LED lighting featuring 7 dazzling color selections, this aquarium kit provides crystal-clear clarity, a powerful internal power filter, and a unique shape for optimum viewing from multiple angles. Made of impact-resistant plastic, this one-piece tank ensures leak-proof assurance unlike glass tanks. Dimensions are 16.50 L x 10.00 W x 11.80 H Inches. User Set-Up Instructions and Koller Products premium filter cartridge are included.

The VEVOR Smart Aquarium offers several handy features to make fishkeeping easier and more enjoyable. Its self-cleaning system helps reduce the need for frequent water changes, saving you time and effort. You can customize the lighting with three different color modes, which not only sets a relaxing mood but also highlights your fish’s natural beauty. The adjustable water flow lets you control the pump speed, creating a comfortable and stress-free environment for your fish that mimics their natural habitat. Plus, the ultra-clear glass provides a sharp, 360-degree view so you can enjoy watching your fish from every angle with crystal-clear clarity.

The Wonderfactory Smart Aquarium is designed to make fishkeeping easy and enjoyable. Its all-in-one setup means you can start right away without needing tools or technical skills, perfect for busy or new aquarium owners. You can control feeding schedules, lighting, and temperature from your phone using the Smart Life app, giving you full control even when you're away. The tank features advanced filtration that keeps the water clean and clear quietly, so it won’t disturb your home or office. Plus, the high-quality glass and customizable LED lights let you showcase your fish beautifully, enhancing any room’s ambiance day or night.

The TARARIUM 5-Gallon Aquarium is made from high-quality, fully transparent glass that ensures durability and a clear view of your aquatic pets. Its water temperature detection system helps you monitor the tank’s environment, so you can keep your fish comfortable and healthy. The aquarium features three different LED light settings designed to support plant growth by providing sufficient oxygen, which also benefits your fish. This tank is perfect for a variety of small fish and aquatic creatures, offering a versatile and convenient setup for beginners and hobbyists alike.

The Coospider Glass Aquarium offers a convenient way to care for small aquatic pets like Betta fish, shrimp, and snails. It features a built-in real-time temperature sensor that helps you maintain a stable water temperature, which is important for the health of sensitive species. The aquarium has three LED light colors that support plant growth and enhance the tank’s appearance, allowing you to enjoy a beautiful display day or night. Its quiet 3-in-1 pump filters, oxygenates, and creates gentle water movement, reducing the time and effort you spend on maintenance. Plus, the ultra-clear glass ensures you get a clear, distortion-free view of your underwater environment.

The RED TAIL FISH Rimless Aquarium offers a crystal-clear view thanks to its low-iron glass, which ensures no color distortion so you can enjoy the vibrant colors of your fish. Its 5-gallon size is perfect for small aquatic setups, fitting comfortably in most spaces. The rimless design gives you an unobstructed, modern look and makes it easy to access the tank for cleaning or adjusting lighting. Built with thick, 5mm glass and smooth, polished edges, this tank is crafted for durability and a sleek finish, providing both strength and style for your aquarium experience.

The Wonderfactory Smart Aquarium is a 5-gallon tank designed to make fishkeeping easy and enjoyable. It comes ready to use right out of the box, featuring built-in filtration and a leak-proof design that requires no setup or extra tools. You can control the aquarium from your phone using the Smart Life app, which lets you schedule feedings, change the LED light colors, and check the water temperature anytime, perfect for busy lifestyles. The tank also includes a quiet, triple bio-filtration system that keeps the water crystal clear and healthy for your fish, while the high-quality glass offers a clear view and customizable lighting to brighten your aquatic environment.

The Imagitarium Betta Aquarium Kit is designed to enhance your home with the beauty of aquatic life. This 5-gallon aquarium allows you to easily showcase your fish and create an inviting underwater ecosystem. With a focus on innovation, Imagitarium provides reliable products that make maintaining an aquarium enjoyable and straightforward. You can effortlessly integrate the aquarium into your living space, adding a touch of tranquility to your environment. The brand's extensive product line supports you in creating a thriving habitat for your pets, ensuring their well-being and your satisfaction.

The GloFish Aquarium Kit is a 5-gallon glass tank that includes all the essentials, such as Tetra Hidden Filtration, an adjustable flow filter pump, and GloFish Cycle Light with four modes. This aquarium kit is perfect for any size room and comes with four lighting modes to create a unique ambiance. Additionally, you can add colorful GloFish gravel, plants, and décor to complete the look (sold separately).

The HeyKoala 5 Gallon Tank offers a complete setup ideal for small fish like bettas, guppies, or shrimp. Its 3-stage filtration system keeps the water clean by cycling it 16 times per hour, creating a healthy environment for your aquatic pets. The smart LED lighting lets you choose from different colors and brightness levels, plus a timer to fit your schedule. Its quiet filter won't disturb your peace, making it perfect for bedrooms or offices. Made with premium low-iron glass and a sleek black background, this frameless tank looks great anywhere while keeping cords hidden for a tidy appearance.