Blue Gourami Tank Mates

• Agassiz's Corydoras✅ Compatible
  Peaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Banjo Catfish✅ Compatible
  Peaceful · 15 cm · Medium care · 20–26 °C (68–79 °F)
  • Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
• Bearded Corydoras✅ Compatible
  Peaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
  • Compatible on the things that matter: shared water near 22–24 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Black Kuhli Loach✅ Compatible
  Peaceful · 8 cm · Easy care · 23–28 °C (73–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Blood Red Tiger Pleco✅ Compatible
  Peaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
• Bolivian Ram✅ Compatible
  Peaceful · 8 cm · Medium care · 24–28 °C (75–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Bristlenose Pleco✅ Compatible
  Peaceful · 12 cm · Easy care · 23–30 °C (73–86 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Burmese Loach✅ Compatible
  Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
  • Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
• Clown Pleco✅ Compatible
  Peaceful · 9 cm · Medium care · 24–28 °C (75–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
• Corydoras Catfish✅ Compatible
  Peaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Corydoras Catfish in a shoal of 6+ or it gets stressed and nippy.
• Giant Kuhli Loach✅ Compatible
  Peaceful · 12 cm · Easy care · 24–30 °C (75–86 °F)
  • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
• Kuhli Loach✅ Compatible
  Peaceful · 10 cm · Easy care · 24–30 °C (75–86 °F)
  • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
• Leopard Frog Pleco✅ Compatible
  Peaceful · 9 cm · Medium care · 25–30 °C (77–86 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Marbled Hoplo✅ Compatible
  Peaceful · 14 cm · Easy care · 22–28 °C (72–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Pantanal Corydoras✅ Compatible
  Peaceful · 8 cm · Medium care · 22–27 °C (72–81 °F)
  • Compatible on the things that matter: shared water near 22–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Pantanal Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Peppered Corydoras✅ Compatible
  Peaceful · 7 cm · Easy care · 18–26 °C (64–79 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
  • Keep Peppered Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Porthole Catfish✅ Compatible
  Peaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
• Spotfin Corydoras✅ Compatible
  Peaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
  • Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Spotfin Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Spotted Corydoras✅ Compatible
  Peaceful · 7 cm · Easy care · 22–27 °C (72–81 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
  • Keep Spotted Corydoras 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)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Spotted Talking Catfish✅ Compatible
  Peaceful · 15 cm · Easy care · 22–26 °C (72–79 °F)
  • Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
• Sterbai Corydoras✅ Compatible
  Peaceful · 6.5 cm · Medium care · 24–30 °C (75–86 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Keep Sterbai Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Striped Eel Loach✅ Compatible
  Peaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
• Zebra Pleco✅ Compatible
  Peaceful · 10 cm · Hard care · 26–30 °C (79–86 °F)
  • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 26–28 °C — no size, zone or temperament conflicts.
• Angelfish⚠️ With caution
  Semi-aggressive · 15 cm · Medium care · 24–30 °C (75–86 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
• Banded Gourami⚠️ With caution
  Semi-aggressive · 12 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Blue Gourami 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 Flash Cichlid⚠️ With caution
  Semi-aggressive · 15 cm · Medium care · 24–28 °C (75–82 °F)
  • Blue Gourami and Blue Flash Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
  • Your 113 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
• Calvus Cichlid⚠️ With caution
  Semi-aggressive · 14 cm · Medium care · 24–27 °C (75–81 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Your 113 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
• Cupid Cichlid⚠️ With caution
  Semi-aggressive · 12 cm · Medium care · 24–29 °C (75–84 °F)
  • Blue Gourami and Cupid Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
• Giant Betta⚠️ With caution
  Peaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
  • Blue Gourami is semi-aggressive and may chase or nip the smaller Giant Betta — plant heavily and break up sight lines.
  • Blue Gourami and Giant Betta are both labyrinth fish and often treat each other as rivals — give a large, broken-up tank and be ready to separate them.
• Mascara Barb⚠️ With caution
  Peaceful · 12 cm · Medium care · 20–25 °C (68–77 °F)
  • Blue Gourami and Mascara Barb are close in size, but the semi-aggressive one tends to dominate — add mascara barb in a group to spread the pressure.
  • Your 113 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 113 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)
  • Blue Gourami and Pearl Gourami are close in size, but the semi-aggressive one tends to dominate — add pearl gourami in a group to spread the pressure.
  • Blue Gourami and Pearl 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 113 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)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Your 113 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
• Polka-dot Loach⚠️ With caution
  Semi-aggressive · 13 cm · Medium care · 24–28 °C (75–82 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Your 113 L tank is below the ~120 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)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Powder Blue Cichlid is a notorious fin-nipper — even though Blue Gourami is larger, an active shoal will harass its trailing fins. Only safe in a full group of 6+ with plenty of cover.
  • Your 113 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.
• Rainbow Cichlid⚠️ With caution
  Semi-aggressive · 14 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Your 113 L tank is below the ~130 L this pairing really wants — crowding raises aggression.
• Rubber Lip Pleco⚠️ With caution
  Peaceful · 12 cm · Easy care · 20–26 °C (68–79 °F)
  • Your 113 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
• Swordtail⚠️ With caution
  Semi-aggressive · 14 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
• T-bar Cichlid⚠️ With caution
  Semi-aggressive · 12 cm · Medium care · 22–28 °C (72–82 °F)
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Your 113 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
• Alligator Gar⛔ Not recommended
  Aggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
  • Two assertive fish, one genuinely aggressive: Blue Gourami and Alligator Gar will hold territory and clash.
  • Alligator Gar (250 cm) is big enough to swallow the 13 cm Blue Gourami whole.
  • Your 113 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)
  • Blue Gourami and Clown Knifefish are both territorial and at least one is outright aggressive — expect serious fighting.
  • Blue Gourami is bite-sized to a 90 cm predatory clown knifefish — it will be eaten.
  • Your 113 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)
  • Blue Gourami is bite-sized to a 100 cm predatory fire eel — it will be eaten.
  • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Your 113 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)
  • Koi (90 cm) is big enough to swallow the 13 cm Blue Gourami whole.
  • Your 113 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)
  • Two assertive fish, one genuinely aggressive: Blue Gourami and Redtail Catfish will hold territory and clash.
  • Size gap is too large (120 vs 13 cm): Redtail Catfish will treat Blue Gourami as food.
  • Your 113 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)
  • Two assertive fish, one genuinely aggressive: Blue Gourami and Spotted Gar will hold territory and clash.
  • Spotted Gar (90 cm) is big enough to swallow the 13 cm Blue Gourami whole.
  • Your 113 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)
  • Two assertive fish, one genuinely aggressive: Blue Gourami and Wels Catfish will hold territory and clash.
  • Blue Gourami is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
  • Your 113 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)
  • Blue Gourami and Wolf Cichlid are both territorial and at least one is outright aggressive — expect serious fighting.
  • Wolf Cichlid (72 cm) is big enough to swallow the 13 cm Blue Gourami whole.
  • Your 113 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.