10 Best Fish Tanks 2025 in the United States

The Aqueon 20 Gallon Aquarium Starter Kit is well suited for beginners looking to keep small tropical fish like Platies, Mollies, or Dwarf Gouramis. It comes with a 20-gallon glass tank that has a classic rectangular shape, offering a good size for a variety of fish without taking up too much space. The glass material is durable and clear, ensuring you can enjoy a nice view of your aquatic pets. One of its strong points is the SmartClean internal power filter, which simplifies water changes and helps keep the water clean. This is important for maintaining a healthy environment for your fish. The preset 50W heater maintains a steady temperature around 78°F, ideal for tropical fish, so you don’t have to worry about manual adjustments.

The low-profile hood includes bright LED lighting that enhances the look of your tank and supports plant growth if you want to add live plants. Additional accessories like fish food, water conditioner, a net, and a thermometer make it a true all-in-one starter kit, which is great if you are new to fish keeping and want a hassle-free setup. One minor downside is that the internal filter may not be as powerful or quiet as some external filters, which could be a consideration if you prefer a very silent tank. Also, the 20-gallon size is best suited for small fish species and might not be enough if you want to keep larger or more fish. This kit provides a convenient and reliable way to start an aquarium with good quality components and user-friendly features.

The biOrb Classic 60 is a 16-gallon round aquarium made from acrylic, which is stronger, lighter, and clearer than typical glass tanks. Its shape offers a 360-degree view, making it great for placing on a table where you can enjoy watching your fish from all angles. The size is moderate—large enough for a small community of fish but not suitable for larger species or big aquatic setups.

One of its highlights is the built-in 5-stage filtration system that keeps water clean and healthy with biological, mechanical, and chemical filtering, plus oxygenation. This filter is easy to maintain and hidden at the bottom of the tank, which helps keep the design sleek. Another nice feature is the multi-color LED lighting controlled by a remote, allowing you to set different colors, brightness, and timed day-night cycles. This lighting not only looks attractive but also helps reduce algae growth. The tank comes with everything needed to get started except decorations, including a quiet air pump and starter water treatments.

While the round shape looks stylish, it can limit swimming space and placement of decorations compared to rectangular tanks. Also, the 16-gallon capacity means it’s better suited for beginners or hobbyists who want a small, modern aquarium rather than large or advanced setups. It is an appealing choice for those wanting a low-maintenance, visually striking tank for indoor tabletop use.

The biOrb Classic 15 Aquarium is a compact 4-gallon fish tank that fits well in small spaces such as desks or tabletops. Its round shape provides a 360-degree view, making it easy to appreciate your fish from any angle. Made from acrylic, this tank is stronger, lighter, and clearer than typical glass tanks, and it helps keep water temperature more stable thanks to its insulating properties. It includes a built-in 5-stage filtration system that handles biological, mechanical, chemical cleaning, water stabilization, and oxygenation, which helps keep the water clean and healthy for fish. The filter sits at the bottom and uses ceramic media to support beneficial bacteria growth, reducing maintenance effort.

The tank also features white LED lighting with a simple on/off switch, adding a pleasant glow without requiring extra bulbs. The kit comes complete with necessary accessories like an air pump, water treatments, and instructions, so you can set it up quickly—just add decorations and fish. On the downside, the 4-gallon size limits the number and types of fish you can keep, making it best suited for small or single fish species. Its round shape might also reduce usable space inside compared to rectangular tanks. While the filtration system is effective for its size, it may not support heavily stocked tanks or fish that produce a lot of waste.

This aquarium is an excellent choice for beginners or anyone wanting a stylish, low-maintenance tank in a small area, though it is not ideal for larger or more demanding fish setups.