​​Betta fish are known for their striking colors and flowing fins, but they also have a reputation for being territorial. While they can be aggressive toward certain species, there are many peaceful tankmates that can coexist with them. Choosing the right companions will help keep your betta stress-free while maintaining a balanced aquarium. Let’s see 12 of the best tankmates that will help create a calm and harmonious environment for your betta.

1. Corydoras Catfish

Corydoras catfish are one of the best companions for bettas due to their peaceful nature. These bottom-dwelling fish spend most of their time scavenging for leftover food, which helps keep the tank clean. Since they inhabit the lower levels of the tank, they rarely come into contact with bettas, minimizing conflicts. It’s best to keep them in groups of at least three to five, as they are social fish that thrive in numbers. Providing a soft substrate like sand will help prevent damage to their sensitive barbels, ensuring they stay healthy.

2. Kuhli Loaches

Kuhli loaches are unique, eel-like fish that add an interesting dynamic to any aquarium. They are extremely peaceful and prefer hiding in caves or burrowing in the substrate during the day. Their nocturnal nature means they are less likely to cross paths with a betta, making them excellent tankmates. They require a well-established tank with plenty of hiding spots, as they can be shy in new environments. Keeping them in groups of at least three will help them feel secure and encourage their natural behaviors, reducing stress for all tank inhabitants.

3. Harlequin Rasboras

Harlequin rasboras are small, active schooling fish that can peacefully coexist with bettas. Their calm demeanor and non-aggressive nature make them ideal companions. They prefer to swim in the middle of the tank, while bettas tend to stay near the surface, reducing the chances of territorial disputes. Since rasboras feel safest in schools, keeping at least six together is essential. A well-planted tank with plenty of swimming space will help them feel comfortable and reduce stress for both the rasboras and the betta.

4. Neon Tetras

Neon tetras are vibrant, fast-moving fish that thrive in community tanks. Their speed and schooling behavior help them avoid aggression from bettas. Since bettas are known to be territorial, keeping a group of at least six tetras will ensure they feel secure and prevent bullying. A well-planted tank with hiding spots is ideal for reducing stress. Neon tetras prefer slightly acidic water conditions, so ensuring water parameters match both species’ needs will help them coexist peacefully. Regular feeding and proper tank maintenance will also prevent competition for food.

5. Ember Tetras

Ember tetras are small, peaceful fish with a striking orange-red hue that adds vibrancy to a betta tank. Unlike other bright-colored fish, their small size and non-threatening nature prevent them from triggering betta aggression. They thrive in schools of at least six and prefer densely planted tanks with plenty of swimming space. Since they are mid-level swimmers, they avoid direct confrontation with bettas. Keeping water conditions stable and providing a varied diet will ensure both bettas and ember tetras remain healthy and stress-free.

6. Otocinclus Catfish

Otocinclus catfish are tiny algae eaters that help keep the tank clean while remaining unobtrusive. Their peaceful nature and tendency to cling to glass and plants make them ideal betta companions. Since they are social fish, they should be kept in groups of at least three to ensure they feel secure. They require a steady supply of algae or supplemental algae wafers to thrive. A well-maintained tank with stable water conditions is essential, as they are sensitive to fluctuations. Their quiet presence makes them a great addition to a betta tank.

7. Pygmy Corydoras

Pygmy corydoras are a smaller version of the standard Corydoras catfish, making them ideal for nano tanks with bettas. Their peaceful temperament and bottom-dwelling habits keep them out of a betta’s way. They do best in groups of six or more, as they are social fish that rely on group interactions for security. A soft substrate is necessary to protect their delicate barbels, and they should be fed sinking pellets to ensure they receive adequate nutrition. With proper care, pygmy corydoras can coexist peacefully with bettas while contributing to a clean tank.

8. Clown Plecos

Clown plecos are small, hardy fish that specialize in algae control. Their armored bodies protect them from potential betta aggression, and their preference for staying near the bottom makes them unobtrusive. They require driftwood in their tank, as it helps with digestion and provides essential nutrients. Since clown plecos are nocturnal, they are most active when bettas are less aggressive. Providing hiding spots and ensuring a balanced diet of algae and vegetables will keep them healthy and stress-free.

9. Ghost Shrimp

Ghost shrimp are transparent, bottom-dwelling creatures that contribute to tank cleanliness by consuming leftover food and algae. Their small size and ability to hide among plants and decorations help them avoid betta aggression. While some bettas may attempt to nip at them, providing plenty of hiding spaces will ensure their safety. Since they reproduce quickly, a small group of ghost shrimp can maintain a healthy population over time. Ensuring a well-balanced diet of algae wafers and sinking pellets will keep them active and beneficial for the tank.

10. Amano Shrimp

Amano shrimp are slightly larger than ghost shrimp and are known for their exceptional algae-eating abilities. They are peaceful creatures that help maintain a clean tank by consuming detritus and leftover food. Due to their larger size, they are less likely to be seen as prey by bettas, though some bettas may still show curiosity. A well-planted tank with plenty of hiding spaces will help them feel secure. Regular feeding of algae wafers and blanched vegetables will keep them healthy and ensure they thrive alongside bettas.

11. Cherry Shrimp

Cherry shrimp are colorful and active scavengers that can add life to a betta tank. Their bright red coloration may sometimes attract a betta’s attention, but with enough hiding spaces, they can coexist peacefully. A densely planted tank with moss, driftwood, and caves will provide security for them. Since they breed quickly, even if a betta eats a few, a stable colony can be maintained. Providing a balanced diet of algae wafers and biofilm will ensure they remain healthy and continue contributing to tank cleanliness.

12. Mystery Snails

Mystery snails are slow-moving, peaceful creatures that add an interesting dynamic to a betta tank. Their hard shells protect them from betta aggression, and they help keep the tank clean by consuming algae and leftover food. They require a calcium-rich diet to maintain a healthy shell, so supplementing their food with calcium sources is essential. Mystery snails are best kept in tanks with stable water conditions and minimal sudden disturbances. Their slow nature and cleaning abilities make them one of the best non-fish companions for bettas.

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