Best 3-Gallon Aquariums of 2026

The Tetra LED Cube Aquarium Kit is a stylish and convenient 3-gallon aquarium kit perfect for betta fish, goldfish, guppies, or small tropical fish. It features an LED light to highlight your fish and an attractive pedestal base. The kit includes an air pump-driven Tetra Whisper power filter to keep your tank clean and provide a healthy environment for pet fish. The clear canopy has a hole for easy feeding, and the tank dimensions are 10 inches deep x 10 inches wide x 10.512 inches high.

The Koller Products 3-Gallon 360 Aquarium with LED Lighting is an ideal choice for a variety of tropical fish. It features energy-efficient LED lighting with 7 dazzling color selections, a powerful internal power filter that cleans and purifies aquarium water at a flow rate of 25 gallon per hour, and is constructed of impact-resistant plastic with crystal-clear clarity. It is easy to set up and maintain, making it suitable for beginner to advanced aquarium owners.

The Koller AquaView Aquarium is perfect for both beginners and advanced fish enthusiasts. It features energy-efficient LED lighting with seven vibrant color options, allowing you to showcase your fish beautifully. The powerful internal filter ensures that the water remains clean and clear, providing a healthy environment for your aquatic pets. Additionally, the aquarium is made from impact-resistant plastic, giving you peace of mind with its leak-proof design. You can also easily schedule the lighting with a built-in timer, enhancing convenience for your daily routine.

The Craftsboys Nano Fish Tank is a great choice if you're new to fishkeeping. It features thick, clear glass that gives you a sharp view of your aquatic pets without distortion, while the black background helps their colors really pop and hides any equipment neatly. This tank comes as a complete set, including a powerful filter, bright LED lighting, a secure lid, sand substrate, and decorative volcanic rocks that support beneficial bacteria growth and add natural beauty. With its easy setup, you just need to add water, plants, and fish to create a stunning underwater environment quickly and effortlessly.

The LAQUAL 3 Gallon Ultra Clear Glass Fish Tank is a rimless low iron aquarium designed for betta, nano, goldfish, snail, and shrimp. It is made of 5 mm thick low iron glass, providing an ultra-clear and high transmittance view. The package includes a mesh fish net and a water-changing siphon, making it a convenient small aquarium for starters. Customers have praised its sturdiness and slim shape, perfect for an office desk or kids room.

The GloFish Betta Trilogy offers a vibrant aquatic experience with its dual LED lighting options. You can switch between White Light Mode to brighten your fish’s natural colors and Moonlight Mode to make your GloFish décor glow beautifully at night. Its built-in three-stage filtration system keeps the water clean and healthy by combining mechanical, chemical, and biological filters, making maintenance easier for you. Designed specifically for male GloFish Bettas, this aquarium has three separate one-gallon compartments, providing each fish with its own space. Plus, you can customize the tank with GloFish plants and décor to create a stunning fluorescent underwater scene.

The iPriro Betta Fish Tank is a compact 3-gallon aquarium designed especially for Betta fish and other small species. Its clear, durable glass lets you enjoy a perfect view of your aquatic pets, while the white cushion pad adds a sleek look that fits any home decor. The tank includes a hang-on filter with adjustable flow to keep the water clean and healthy, and you can remove the oil-skimming module if you have tiny or delicate fish. Plus, the LED clip-on light offers three color settings and adjustable brightness, helping you highlight your fish and tank decorations beautifully day or night.

The RED TAIL FISH Smart Betta Tank offers a sleek, all-in-one design that keeps your space tidy by integrating filtration, lighting, and temperature display into the lid. This makes it a stylish addition to any room or office. You can easily keep an eye on the water temperature with its built-in digital monitor, which helps you maintain a healthy environment for your betta fish, especially if you're new to fish care. The hidden three-stage filtration system quietly cleans and oxygenates the water, ensuring your fish thrive with less hassle. Plus, the tank features 8 vibrant LED lighting options to brighten your fish’s colors and set the mood in your space.

The iPriro Betta Fish Tank is an ideal choice for aquatic enthusiasts looking to house small fish like Bettas and guppies. Its sleek design, measuring 12.6 inches long, adds elegance to your space. The tank features a powerful hanging filter that maximizes room for your fish while ensuring clean water. With full-spectrum LED lights, you can create a vibrant underwater environment that enhances the beauty of your aquatic friends. Additionally, the included dividers allow you to safely house multiple fish, giving them space to swim and relax comfortably.

The Tlence Small Glass Aquarium is a compact tank perfect for small fish, shrimp, or aquatic plants, holding around 2.5 to 2.7 gallons of water. Its size makes it ideal for places with limited space, like desks or apartments. Made from clear, high-quality glass, it offers you a bright and scratch-free view of your aquatic pets. The tank’s thick, strong glass and precise construction prevent leaks and cracks, ensuring a safe environment for your fish. Plus, its simple rectangular design means you can easily add filters, heaters, or other accessories, and cleaning it is hassle-free, helping you keep your fish comfortable and healthy.