6 Unusual Types of Fish To Keep In An Aquarium

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Aquariums are a source of relaxation for many people looking to de-stress after a long day. It adds instant beauty and peace to any room, but caring for your fish is also an enjoyable hobby.

Although many aquarists are familiar with the common types of fish, such as goldfish and guppies, there are some unique species that may surprise you. Here are 6 unusual fish species that will make your aquarium stand out from all others!


Plecos are fascinating creatures that have captured the hearts of many fish enthusiasts. Known for their unique appearance and ability to keep tank walls clean, these little guys have become a popular addition to many aquariums. But did you know there are over 150 different species of plecos? Whether you’re a seasoned pleco owner or just learning about these incredible fish, read more here to discover some of the most popular species you can add to your aquarium. So why not expand your knowledge of these amazing aquatic creatures?

Cory Catfish

Cory Catfish are unique creatures with spunk and personality that will leave you smitten. These bottom feeders add a special touch to any aquarium with their playful behavior and social nature. Aside from serving as excellent cleaners, they also have the ability to pat fish on the back with their fins as a way of communicating. These little fish may be small in size, but their presence in a tank can make a big impact. Their adorable appearance and amusing antics make them popular amongst aquarists and beginners alike. If you’re looking for a fish with a lot of personality, consider adding a Cory Catfish to your underwater family.


Rainbowfish are some of the most beautiful and vibrant fish you can find in freshwater aquariums. Popular for their bright and colorful fins, these fish add a pop of color to any tank. From shimmering blue and green scales to bold orange and red hues on their fins, rainbowfish are truly a sight to behold. They are also great community fish as they are peaceful and easy to care for. These fish are perfect for beginners looking to add some color to their aquarium or for experienced aquarists who appreciate the beauty of these stunning fish.


Loaches are an interesting addition to an aquarium due to their unique shape and behavior. Many species are renowned for their elongated bodies, barbels near the mouth, and scavenging habits. They often roam around the bottom of the tank, hiding in caves and crevices, contributing to the overall dynamism of the aquarium setting.

These nocturnal scavengers are rarely seen during the day, but they come out at night to clean up any food left in a tank. They also love tunneling and burrowing activities, which keep the substrate from getting compacted. With their active behavior and amusing antics, loaches make great additions to any tank. Plus, there are over 200 species of loaches available so you’re sure to find one that’s perfect for your aquarium.

Electric Blue Crayfish

Are you a beginner in the world of aquariums and looking for an interesting and easy-to-maintain species? Look no further than the electric blue crayfish. These vibrant creatures, with their striking blue coloration and unique appearance, are sure to make a statement in any aquatic setup.

Additionally, electric blue crayfish have simple care requirements; they don’t need any special attention or feeding. With the right conditions, they can live for several years and even breed. They’re also known for their peaceful nature, making them an ideal community species. If you’re ready to add a touch of color and personality to your aquarium, consider the electric blue crayfish.

Betta Fish

Betta fish, also known as the Siamese fighting fish, are captivating creatures with a big attitude. These fish are known for their vibrant colors and flowing fins, making them a popular choice among fish enthusiasts. But don’t let their delicate appearance fool you —these fish have a feisty temperament and can be quite aggressive towards other Betta fish.

Due to their unique personalities and stunning appearance, it’s easy to see why Betta fish has become a beloved species among aquarium hobbyists. Especially if you are a seasoned aquarist, it’s worth considering adding one (or two!) of these beautiful fish to your tank.

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The aquatic world is filled with an array of unique, colorful, and fascinating creatures that can add intrigue and beauty to any aquarium. Whether you’re a seasoned aquarist or a beginner venturing into the hobby, each of the unusual fish species listed above offers something different, from vibrant colors and unique behaviors to easy care and maintenance. Each fish, regardless of how unusual, requires proper care and a conducive environment to thrive. Happy fishkeeping!