Best Rectangular Aquariums of 2025

The Tetra Glass Aquarium 29 Gallons is a rectangular fish tank made of glass that provides an ideal home for your fish. The aquarium allows easy customization with assorted Tetra accessories (sold separately) to make it your own. You can mix and match with your favorite Tetra filtration, lighting, and water care products (sold separately). The aquarium measures 30 inches wide by 12 inches deep by 18 inches high, providing ample space for your aquatic friends. The Tetra brand is dedicated to helping both seasoned hobbyists and beginners have a lifelong aquatic experience.

The AQUANEAT Small Betta Fish Tank is perfect for beginners or kids. The built-in LED light makes your fish and decorations look vibrant. Its compact size fits well on any desktop. The water filtration system reduces the need for frequent water changes, keeping your Betta, shrimp, snails, or goldfish happy. Remember to use a pre-filter sponge if the water flow is too strong. This starter kit includes everything you need to get started.

The Pawfly Rimless Aquarium offers a stunning 5-gallon tank designed for clear visibility of your aquatic life. Its full-spectrum lighting features adjustable brightness and a timer, ensuring your fish enjoy a natural day and night cycle. The integrated triple filtration system keeps your water clean and fresh, making maintenance a breeze. Plus, the magnetic glass cleaner helps you easily remove stubborn stains and dust, keeping your tank crystal clear. This aquarium kit is perfect for creating a vibrant habitat for your fish and plants while being easy to care for.

The iPriro Betta Aquarium is a stunning 3-gallon tank designed specifically for Betta fish and other small aquatic pets. Its sleek design not only enhances your home decor but also includes essential features like a built-in filter and adjustable flow for easy maintenance. The full-spectrum LED lights provide vibrant illumination, promoting both plant growth and a captivating view of your fish. With dividers included, you can safely house multiple Betta fish, allowing them to thrive while adding a touch of elegance to 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.