Betta fish, also known as Siamese fighting fish, are stunning, vibrant swimmers often chosen for their striking looks and bold personalities. But beneath those flowing fins lies a territorial nature that can turn any peaceful tank into a battleground if paired with the wrong tank mates. If you’re planning a community aquarium, here are six fish you should definitely avoid housing with your betta.
1. Tiger Barbs – Fin-Nipping Nightmares
Tiger barbs are fast, energetic, and often aggressive—especially in small groups. Their favorite pastime? Nipping at long, flowing fins, which makes a betta’s elegant tail the perfect target. Even if your betta tries to retreat, these little troublemakers are relentless. A stressed or injured betta is more prone to disease and reduced lifespan, so it’s best to avoid pairing the two. While tiger barbs can be great in a group of their own, they’re simply too boisterous and bold to peacefully coexist with a betta.
2. Guppies – Too Colorful for Comfort
At first glance, guppies seem like ideal tank mates. They’re peaceful, small, and social. But here’s the catch: male guppies often have flashy, flowing tails that can easily be mistaken for another male betta. This visual confusion may trigger your betta’s territorial instincts, turning a peaceful tank into a chase scene. Even worse, guppies may reproduce quickly, adding to the stress and overcrowding. To keep the peace, it’s best to house your betta with less flashy, more subdued fish.
3. Goldfish – Different Needs, Different Worlds
Goldfish and bettas are both popular choices for beginner aquarists, but they couldn’t be more different when it comes to care requirements. Goldfish are cold-water fish, while bettas need warm, tropical temperatures to thrive. Their dietary needs also vary, and goldfish are notorious for producing a lot of waste—polluting the tank and making conditions harsher for your betta. Plus, goldfish may nip out of curiosity, and their fast-paced swimming can leave a betta stressed and hiding.
4. Gouramis – Too Similar to Coexist
Gouramis, especially dwarf and pearl varieties, share a lot in common with bettas. They are members of the same family, Osphronemidae, and likewise breathe using an organ, named labyrinth. However, these shared characteristics are precisely what make them unsuitable roommates. Bettas see gouramis as direct competitors for territory, food, and dominance. What starts as a few warning flares can quickly turn into full-blown battles. Instead of peaceful cohabitation, you’ll likely end up with injured or stressed-out fish.
5. Cichlids – Aggressive and Territorial
Cichlids are a broad group of colorful, intelligent fish, but they’re also fiercely territorial. Even the smaller varieties like kribensis or convict cichlids can become highly aggressive during feeding or breeding. Pair that with a betta’s own dominant tendencies, and you’ve got a recipe for constant conflict. These fish are best suited for species-specific tanks or carefully planned cichlid communities—not shared with a betta that’s just trying to rule its own little corner of the tank.
6. Tetras (Certain Types) – Fast and Nippy
While some peaceful tetras can coexist with a betta under the right conditions, others—like serpae or black skirt tetras—are notorious for nipping fins. Their quick movements and group behavior can overwhelm and stress out your betta, who prefers a slower, more solitary lifestyle. Tetras also thrive in slightly different water parameters, which can lead to long-term health issues for both species. If you’re set on adding tetras, always research their temperament and choose less aggressive types like ember or neon tetras—with caution.
Love Pets as Much as We Do?
Scroll up and click the ‘Follow’ button to stay updated with the latest heart-warming, hilarious, and helpful pet posts from Pawdown, delivered straight to your Microsoft Start feed and MSN homepage!