Giant Betta Tank Mates

Giant Betta is peaceful, so its tank mates need choosing with care. Here are the 144 freshwater species that pair well with a giant betta — plus the 45 to avoid — with a live checker you can tune to your own tank.

By The Aquarium DB Team • Updated June 7, 2026 • Full Giant Betta care guide →
Best matches

The best tank mates for a giant betta

  • Ember Tetra ✅ Compatible
    Easy care · Peaceful · 2 cm · 24–28 °C (75–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Neon Green Rasbora ✅ Compatible
    Easy care · Peaceful · 2 cm · 22–26 °C (72–79 °F)
    Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
  • Ramshorn Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 20–28 °C (68–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Red Lip Nerite Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Dawn Tetra ✅ Compatible
    Easy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Nerite Snail ✅ Compatible
    Easy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Assassin Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)
    Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
  • Glowlight Danio ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)
    Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Gold Ring Danio ✅ Compatible
    Easy care · Peaceful · 3 cm · 18–26 °C (64–79 °F)
    Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Malaysian Trumpet Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 21–27 °C (70–81 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Neon Tetra ✅ Compatible
    Easy care · Peaceful · 3 cm · 20–26 °C (68–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Tail-spot Corydoras ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Trinidad Guppy ✅ Compatible
    Easy care · Peaceful · 3 cm · 19–24 °C (66–75 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Pygmy Corydoras ✅ Compatible
    Easy care · Peaceful · 3.2 cm · 22–26 °C (72–79 °F)
    Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
  • Glowlight Rasbora ✅ Compatible
    Easy care · Peaceful · 3.5 cm · 23–28 °C (73–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Blue Danio ✅ Compatible
    Easy care · Peaceful · 4 cm · 21–26 °C (70–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Emperor Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–27 °C (73–81 °F)
    Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Flame Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Glowlight Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Golden Dwarf Barb ✅ Compatible
    Easy care · Peaceful · 4 cm · 18–24 °C (64–75 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Phoenix Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–28 °C (73–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Red Phantom Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Rosy Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Yellow Phantom Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–27 °C (73–81 °F)
    Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
With caution

Giant Betta tank mates that can work with care

  • Afra Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 10 cm · 24–28 °C (75–82 °F)
    pH preferences only just meet (Giant Betta 5–7 vs Afra Cichlid 7.8–8.6) — target the overlap and acclimate slowly.
  • African Butterfly Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 8 cm · 22–28 °C (72–82 °F)
    Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Altifrons Geophagus ⚠️ With caution
    Medium care · Semi-aggressive · 25 cm · 24–28 °C (75–82 °F)
    Expect Altifrons Geophagus to harass Giant Betta at times; give dense cover and watch them at feeding.
  • Amano Shrimp ⚠️ With caution
    Easy care · Peaceful · 5 cm · 18–28 °C (64–82 °F)
    Adult Amano Shrimp might survive with Giant Betta, but expect the young to be eaten — plant heavily.
  • Amazon Puffer ⚠️ With caution
    Medium care · Peaceful · 8 cm · 23–28 °C (73–82 °F)
    Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • Angelfish ⚠️ With caution
    Medium care · Semi-aggressive · 15 cm · 24–30 °C (75–86 °F)
    Expect Angelfish to harass Giant Betta at times; give dense cover and watch them at feeding.
  • Angelicus Synodontis ⚠️ With caution
    Medium care · Semi-aggressive · 25 cm · 23–27 °C (73–81 °F)
    Expect Angelicus Synodontis to harass Giant Betta at times; give dense cover and watch them at feeding.
  • Arrowhead Puffer ⚠️ With caution
    Hard care · Aggressive · 12 cm · 23–28 °C (73–82 °F)
    Expect Arrowhead Puffer to harass Giant Betta at times; give dense cover and watch them at feeding.

+ 143 more “with caution” pairings — see the interactive checker above.

Avoid

Fish to avoid keeping with a giant betta

  • Wels Catfish ⛔ Avoid
    Hard care · Aggressive · 300 cm · 15–25 °C (59–77 °F)
    Wels Catfish (300 cm) is big enough to swallow the 12 cm Giant Betta whole.
  • Alligator Gar ⛔ Avoid
    Hard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)
    Alligator Gar (250 cm) is big enough to swallow the 12 cm Giant Betta whole.
  • Redtail Catfish ⛔ Avoid
    Hard care · Aggressive · 120 cm · 24–27 °C (75–81 °F)
    Giant Betta is bite-sized to a 120 cm predatory redtail catfish — it will be eaten.
  • Fire Eel ⛔ Avoid
    Medium care · Semi-aggressive · 100 cm · 24–28 °C (75–82 °F)
    Size gap is too large (100 vs 12 cm): Fire Eel will treat Giant Betta as food.
  • Clown Knifefish ⛔ Avoid
    Hard care · Aggressive · 90 cm · 24–28 °C (75–82 °F)
    Clown Knifefish (90 cm) is big enough to swallow the 12 cm Giant Betta whole.
  • Koi ⛔ Avoid
    Medium care · Peaceful · 90 cm · 4–28 °C (39–82 °F)
    Giant Betta is bite-sized to a 90 cm koi — it will be eaten.
  • Spotted Gar ⛔ Avoid
    Hard care · Aggressive · 90 cm · 18–26 °C (64–79 °F)
    Giant Betta is bite-sized to a 90 cm predatory spotted gar — it will be eaten.
  • Wolf Cichlid ⛔ Avoid
    Hard care · Aggressive · 72 cm · 24–30 °C (75–86 °F)
    Giant Betta is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.

+ 37 more to avoid — the checker above flags every one.

Interactive tool

Check any fish against a giant betta

Dial in your exact tank size and filter by result — the checker scores every species in our database against a giant betta, with the reasoning for each verdict.

Tank-mate checker

Will it live with a Giant Betta?

We compare each fish against your giant betta on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.

  • Agassiz's Dwarf Cichlid✅ Compatible
    Semi-aggressive · 9 cm · Medium care · 24–30 °C (75–86 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Badis✅ Compatible
    Semi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Banded Dwarf Cichlid✅ Compatible
    Semi-aggressive · 7 cm · Medium care · 24–30 °C (75–86 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Banjo Catfish✅ Compatible
    Peaceful · 15 cm · Medium care · 20–26 °C (68–79 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Black Kuhli Loach✅ Compatible
    Peaceful · 8 cm · Easy care · 23–28 °C (73–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Bolivian Ram✅ Compatible
    Peaceful · 8 cm · Medium care · 24–28 °C (75–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Brilliant Rasbora✅ Compatible
    Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Brilliant Rasbora in a shoal of 6+ or it gets stressed and nippy.
  • Burmese Loach✅ Compatible
    Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Cockatoo Dwarf Cichlid✅ Compatible
    Semi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Costa's Tetra✅ Compatible
    Peaceful · 7 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Costa's Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Croaking Gourami✅ Compatible
    Peaceful · 7 cm · Easy care · 24–28 °C (75–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
  • Giant Kuhli Loach✅ Compatible
    Peaceful · 12 cm · Easy care · 24–30 °C (75–86 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Gold Barb✅ Compatible
    Peaceful · 7.5 cm · Easy care · 18–26 °C (64–79 °F)
    • Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Gold Barb in a shoal of 6+ or it gets stressed and nippy.
  • Golden Wonder Killifish✅ Compatible
    Semi-aggressive · 10 cm · Easy care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Goldeneye Dwarf Cichlid✅ Compatible
    Semi-aggressive · 8 cm · Easy care · 24–28 °C (75–82 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Hongsloi Dwarf Cichlid✅ Compatible
    Semi-aggressive · 7 cm · Medium care · 24–29 °C (75–84 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Kribensis✅ Compatible
    Semi-aggressive · 10 cm · Easy care · 24–27 °C (75–81 °F)
    • Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Kuhli Loach✅ Compatible
    Peaceful · 10 cm · Easy care · 24–30 °C (75–86 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Leopard Frog Pleco✅ Compatible
    Peaceful · 9 cm · Medium care · 25–30 °C (77–86 °F)
    • Both are peaceful, and their water overlaps around 25–28 °C — no size, zone or temperament conflicts.
  • Murray River Rainbowfish✅ Compatible
    Peaceful · 11 cm · Easy care · 15–26 °C (59–79 °F)
    • Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Murray River Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
  • Splashing Tetra✅ Compatible
    Peaceful · 8 cm · Medium care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Splashing Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Spotted Rubbernose Pleco✅ Compatible
    Peaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Thick-lipped Gourami✅ Compatible
    Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
  • Topaz Cichlid✅ Compatible
    Semi-aggressive · 10 cm · Medium care · 23–28 °C (73–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
  • Arrowhead Puffer⚠️ With caution
    Aggressive · 12 cm · Hard care · 23–28 °C (73–82 °F)
    • Expect Arrowhead Puffer to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~132 L this pairing really wants — crowding raises aggression.
  • Banded Gourami⚠️ With caution
    Semi-aggressive · 12 cm · Easy care · 22–28 °C (72–82 °F)
    • Expect Banded Gourami to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Giant Betta and Banded Gourami are both labyrinth fish and often treat each other as rivals — give a large, broken-up tank and be ready to separate them.
  • Blue Gourami⚠️ With caution
    Semi-aggressive · 13 cm · Easy care · 22–28 °C (72–82 °F)
    • Blue Gourami is semi-aggressive and may chase or nip the smaller Giant Betta — plant heavily and break up sight lines.
    • Giant Betta and Blue Gourami are both labyrinth fish and often treat each other as rivals — give a large, broken-up tank and be ready to separate them.
    • Your 75 L tank is below the ~113 L this pairing really wants — crowding raises aggression.
  • Bristlenose Pleco⚠️ With caution
    Peaceful · 12 cm · Easy care · 23–30 °C (73–86 °F)
    • Your 75 L tank is below the ~95 L this pairing really wants — crowding raises aggression.
  • Bucktooth Tetra⚠️ With caution
    Aggressive · 12 cm · Medium care · 23–28 °C (73–82 °F)
    • Expect Bucktooth Tetra to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
    • Keep Bucktooth Tetra in a shoal of 8+ or it gets stressed and nippy.
  • Cupid Cichlid⚠️ With caution
    Semi-aggressive · 12 cm · Medium care · 24–29 °C (75–84 °F)
    • Expect Cupid Cichlid to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
  • Ice Blue Cichlid⚠️ With caution
    Aggressive · 12 cm · Medium care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Giant Betta 5–7 vs Ice Blue Cichlid 7.6–8.6) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (1–8 vs 10–25 dGH) — a compromise, not a perfect match.
    • Expect Ice Blue Cichlid to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~190 L this pairing really wants — crowding raises aggression.
  • Mascara Barb⚠️ With caution
    Peaceful · 12 cm · Medium care · 20–25 °C (68–77 °F)
    • Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
    • Keep Mascara Barb in a shoal of 8+ or it gets stressed and nippy.
  • Medusa Pleco⚠️ With caution
    Peaceful · 12 cm · Medium care · 26–30 °C (79–86 °F)
    • Your 75 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
  • Pearl Gourami⚠️ With caution
    Peaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
    • Your 75 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
  • Pictus Catfish⚠️ With caution
    Semi-aggressive · 12 cm · Medium care · 22–27 °C (72–81 °F)
    • Pictus Catfish and Giant Betta are close in size, but the semi-aggressive one tends to dominate — add giant betta in a group to spread the pressure.
    • Your 75 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
  • Powder Blue Cichlid⚠️ With caution
    Semi-aggressive · 12 cm · Medium care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Giant Betta 5–7 vs Powder Blue Cichlid 7.5–8.5) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (1–8 vs 10–20 dGH) — a compromise, not a perfect match.
    • Expect Powder Blue Cichlid to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~170 L this pairing really wants — crowding raises aggression.
    • Keep Powder Blue Cichlid in a shoal of 6+ or it gets stressed and nippy.
  • Rubber Lip Pleco⚠️ With caution
    Peaceful · 12 cm · Easy care · 20–26 °C (68–79 °F)
    • Your 75 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
  • Striped Eel Loach⚠️ With caution
    Peaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
    • Your 75 L tank is below the ~95 L this pairing really wants — crowding raises aggression.
  • T-bar Cichlid⚠️ With caution
    Semi-aggressive · 12 cm · Medium care · 22–28 °C (72–82 °F)
    • T-bar Cichlid is semi-aggressive and may chase or nip the smaller Giant Betta — plant heavily and break up sight lines.
    • Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • White Spotted Cichlid⚠️ With caution
    Aggressive · 12 cm · Hard care · 24–28 °C (75–82 °F)
    • Different pH ranges (5–7 vs 7.8–9); doable if you sit in the shared band, but not ideal long-term.
    • Water hardness preferences differ (Giant Betta 1–8 vs White Spotted Cichlid 10–20 dGH).
    • White Spotted Cichlid is aggressive and may chase or nip the smaller Giant Betta — plant heavily and break up sight lines.
    • Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
    • Keep White Spotted Cichlid in a shoal of 8+ or it gets stressed and nippy.
  • Alligator Gar⛔ Not recommended
    Aggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
    • Alligator Gar (250 cm) is big enough to swallow the 12 cm Giant Betta whole.
    • Expect Alligator Gar to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
  • Clown Knifefish⛔ Not recommended
    Aggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
    • Clown Knifefish (90 cm) is big enough to swallow the 12 cm Giant Betta whole.
    • Clown Knifefish clearly outsizes Giant Betta and is aggressive; risky unless the tank is big and well-planted.
    • Your 75 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
  • Fire Eel⛔ Not recommended
    Semi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
    • Size gap is too large (100 vs 12 cm): Fire Eel will treat Giant Betta as food.
    • Expect Fire Eel to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
  • Koi⛔ Not recommended
    Peaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
    • Giant Betta is bite-sized to a 90 cm koi — it will be eaten.
    • One likes softer water and the other harder (1–8 vs 9–18 dGH) — a compromise, not a perfect match.
    • Your 75 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
  • Redtail Catfish⛔ Not recommended
    Aggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
    • Giant Betta is bite-sized to a 120 cm predatory redtail catfish — it will be eaten.
    • Expect Redtail Catfish to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
  • Spotted Gar⛔ Not recommended
    Aggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
    • Giant Betta is bite-sized to a 90 cm predatory spotted gar — it will be eaten.
    • Spotted Gar is aggressive and may chase or nip the smaller Giant Betta — plant heavily and break up sight lines.
    • Your 75 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
  • Wels Catfish⛔ Not recommended
    Aggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
    • Wels Catfish (300 cm) is big enough to swallow the 12 cm Giant Betta whole.
    • Wels Catfish is aggressive and may chase or nip the smaller Giant Betta — plant heavily and break up sight lines.
    • Your 75 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
  • Wolf Cichlid⛔ Not recommended
    Aggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
    • Giant Betta is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.
    • Expect Wolf Cichlid to harass Giant Betta at times; give dense cover and watch them at feeding.
    • Your 75 L tank is below the ~760 L this pairing really wants — crowding raises aggression.

Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.

Setting up a giant betta community tank

Give the group a stable, planted 75 L+ tank with a gentle filter, a reliable heater and plenty of cover — broken sight lines and hiding spots let mid-water and bottom dwellers keep out of each other's way. Cycle it fully and stock gradually.

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How to choose

How to choose the right tank mates for a giant betta

As a peaceful species, giant betta is easily bullied — favour other calm, non-nippy fish and steer clear of boisterous or aggressive tank mates. It mostly occupies the middle of the tank, so it pairs naturally with species that use the other levels.

Giant Betta grows to about 12 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 6 cm. Match its water, too: aim for 24–28 °C (75–82 °F), pH 5–7 and 1–8 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.

Giant Betta doesn't need its own kind to feel secure; think twice before keeping more than one if it is territorial. Whatever you add, introduce new fish slowly, watch for bullying in the first days, and have a backup plan if temperaments clash.

FAQ

Frequently asked questions

Can a giant betta live with other fish?

Yes — with the right companions. Our checker finds 144 compatible freshwater species for giant betta. Pick calm, similarly-sized fish that share its water needs and add them to a mature, well-planted tank.

What is the best tank mate for a giant betta?

Easy, peaceful, similarly-sized species top the list — for example Ember Tetra, Neon Green Rasbora, Ramshorn Snail. Use the checker above to match against your own tank size.

What fish should you avoid keeping with a giant betta?

Avoid Wels Catfish, Alligator Gar, Redtail Catfish and similar — usually a temperature, size or temperament clash. The full "avoid" list below gives the reason for each.

How big a tank do giant betta tank mates need?

Start from Giant Betta's own minimum and scale up with every addition. The checker above defaults to a 75 L community tank and flags pairings that need more room — drag the slider to match your setup.

← Back to the full Giant Betta care guide