Chocolate Gourami Tank Mates

• Adolf's Cory✅ Compatible
  Peaceful · 5.5 cm · Medium care · 22–26 °C (72–79 °F)
  • Compatible on the things that matter: shared water near 25–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Adolf's Cory in a shoal of 6+ or it gets stressed and nippy.
• Axelrod's Cory✅ Compatible
  Peaceful · 5 cm · Easy care · 23–28 °C (73–82 °F)
  • Both are peaceful, and their water overlaps around 25–28 °C — no size, zone or temperament conflicts.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Axelrod's Cory in a shoal of 6+ or it gets stressed and nippy.
• Bandit Corydoras✅ Compatible
  Peaceful · 5 cm · Easy care · 22–27 °C (72–81 °F)
  • Both are peaceful, and their water overlaps around 25–27 °C — no size, zone or temperament conflicts.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Bandit Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Black Phantom Tetra✅ Compatible
  Peaceful · 4.5 cm · Easy care · 22–28 °C (72–82 °F)
  • Compatible on the things that matter: shared water near 25–28 °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.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Black Phantom Tetra in a shoal of 6+ or it gets stressed and nippy.
• Bloodfin Tetra✅ Compatible
  Peaceful · 5.5 cm · Easy care · 18–28 °C (64–82 °F)
  • Compatible on the things that matter: shared water near 25–28 °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.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Bloodfin Tetra in a shoal of 6+ or it gets stressed and nippy.
• Checkered Barb✅ Compatible
  Peaceful · 5 cm · Easy care · 20–25 °C (68–77 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Checkered Barb in a shoal of 6+ or it gets stressed and nippy.
• Cherry Barb✅ Compatible
  Peaceful · 5 cm · Easy care · 23–27 °C (73–81 °F)
  • Compatible on the things that matter: shared water near 25–27 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Cherry Barb in a shoal of 6+ or it gets stressed and nippy.
• Cochu's Blue Tetra✅ Compatible
  Peaceful · 5 cm · Medium care · 22–28 °C (72–82 °F)
  • Both are peaceful, and their water overlaps around 25–28 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Cochu's Blue Tetra in a shoal of 8+ or it gets stressed and nippy.
• Duplicareus Corydoras✅ Compatible
  Peaceful · 5.5 cm · Medium care · 23–27 °C (73–81 °F)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Duplicareus Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Firehead Tetra✅ Compatible
  Peaceful · 5 cm · Medium care · 24–28 °C (75–82 °F)
  • Compatible on the things that matter: shared water near 25–28 °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.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Firehead Tetra in a shoal of 8+ or it gets stressed and nippy.
• Five-banded Barb✅ Compatible
  Peaceful · 5 cm · Easy care · 23–27 °C (73–81 °F)
  • Both are peaceful, and their water overlaps around 25–27 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Five-banded Barb in a shoal of 6+ or it gets stressed and nippy.
• Gold Tetra✅ Compatible
  Peaceful · 4.5 cm · Easy care · 23–28 °C (73–82 °F)
  • Both are peaceful, and their water overlaps around 25–28 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Gold Tetra in a shoal of 6+ or it gets stressed and nippy.
• Half-striped Penguin Tetra✅ Compatible
  Peaceful · 5 cm · Medium care · 23–28 °C (73–82 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Half-striped Penguin Tetra in a shoal of 6+ or it gets stressed and nippy.
• Harlequin Rasbora✅ Compatible
  Peaceful · 5 cm · Easy care · 23–28 °C (73–82 °F)
  • Both are peaceful, and their water overlaps around 25–28 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Harlequin Rasbora in a shoal of 6+ or it gets stressed and nippy.
• Honey Gourami✅ Compatible
  Peaceful · 5 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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Horseman Cory✅ Compatible
  Peaceful · 5 cm · Medium care · 22–26 °C (72–79 °F)
  • Both are peaceful, and their water overlaps around 25–26 °C — no size, zone or temperament conflicts.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Horseman Cory in a shoal of 6+ or it gets stressed and nippy.
• Julii Corydoras✅ Compatible
  Peaceful · 5 cm · Easy care · 23–26 °C (73–79 °F)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Lemon Tetra✅ Compatible
  Peaceful · 4.5 cm · Easy care · 23–28 °C (73–82 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Lemon Tetra in a shoal of 6+ or it gets stressed and nippy.
• Narcissus II Cory✅ Compatible
  Peaceful · 5.5 cm · Medium care · 22–26 °C (72–79 °F)
  • Compatible on the things that matter: shared water near 25–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Narcissus II Cory in a shoal of 6+ or it gets stressed and nippy.
• Panda Corydoras✅ Compatible
  Peaceful · 5 cm · Medium care · 20–26 °C (68–79 °F)
  • Compatible on the things that matter: shared water near 25–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Panda Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Rummy-nose Tetra✅ Compatible
  Peaceful · 5 cm · Medium care · 23–29 °C (73–84 °F)
  • Compatible on the things that matter: shared water near 25–29 °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 Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Rummy-nose Tetra in a shoal of 6+ or it gets stressed and nippy.
• Rust Corydoras✅ Compatible
  Peaceful · 5.5 cm · Easy care · 23–27 °C (73–81 °F)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Rust Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Skunk Corydoras✅ Compatible
  Peaceful · 5 cm · Easy care · 22–26 °C (72–79 °F)
  • Both are peaceful, and their water overlaps around 25–26 °C — no size, zone or temperament conflicts.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Skunk Corydoras in a shoal of 6+ or it gets stressed and nippy.
• X-ray Tetra✅ Compatible
  Peaceful · 4.5 cm · Easy care · 22–28 °C (72–82 °F)
  • Compatible on the things that matter: shared water near 25–28 °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.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep X-ray Tetra in a shoal of 6+ or it gets stressed and nippy.
• Amano Shrimp⚠️ With caution
  Peaceful · 5 cm · Easy care · 18–28 °C (64–82 °F)
  • pH preferences only just meet (Chocolate Gourami 4–6 vs Amano Shrimp 6.5–7.5) — target the overlap and acclimate slowly.
  • One likes softer water and the other harder (0–5 vs 6–15 dGH) — a compromise, not a perfect match.
  • Chocolate Gourami may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Black Ruby Barb⚠️ With caution
  Semi-aggressive · 6 cm · Easy care · 22–26 °C (72–79 °F)
  • Black Ruby Barb and Chocolate Gourami are close in size, but the semi-aggressive one tends to dominate — add chocolate gourami in a group to spread the pressure.
  • Your 75 L tank is below the ~100 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Black Ruby Barb in a shoal of 6+ or it gets stressed and nippy.
• Blue Turbo Snail⚠️ With caution
  Peaceful · 5 cm · Medium care · 25–30 °C (77–86 °F)
  • Different pH ranges (4–6 vs 7.5–8.5); doable if you sit in the shared band, but not ideal long-term.
  • Water hardness preferences differ (Chocolate Gourami 0–5 vs Blue Turbo Snail 8–18 dGH).
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Forktail Blue-eye⚠️ With caution
  Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
  • Different pH ranges (4–6 vs 6.5–8); doable if you sit in the shared band, but not ideal long-term.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Forktail Blue-eye in a shoal of 6+ or it gets stressed and nippy.
• Humpbacked Tetra⚠️ With caution
  Semi-aggressive · 5 cm · Hard care · 24–28 °C (75–82 °F)
  • Expect Humpbacked Tetra to harass Chocolate Gourami at times; give dense cover and watch them at feeding.
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Humpbacked Tetra in a shoal of 8+ or it gets stressed and nippy.
• Japanese Trapdoor Snail⚠️ With caution
  Peaceful · 5 cm · Easy care · 10–28 °C (50–82 °F)
  • Different pH ranges (4–6 vs 7–8); doable if you sit in the shared band, but not ideal long-term.
  • Water hardness preferences differ (Chocolate Gourami 0–5 vs Japanese Trapdoor Snail 6–15 dGH).
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Masked Corydoras⚠️ With caution
  Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
  • pH preferences only just meet (Chocolate Gourami 4–6 vs Masked Corydoras 6.5–7.5) — target the overlap and acclimate slowly.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Masked Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Morse Code Corydoras⚠️ With caution
  Peaceful · 5 cm · Medium care · 23–26 °C (73–79 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Morse Code Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Mystery Snail⚠️ With caution
  Peaceful · 5 cm · Easy care · 20–28 °C (68–82 °F)
  • Different pH ranges (4–6 vs 7–8); doable if you sit in the shared band, but not ideal long-term.
  • Water hardness preferences differ (Chocolate Gourami 0–5 vs Mystery Snail 7–18 dGH).
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Silvertip Tetra⚠️ With caution
  Semi-aggressive · 5 cm · Easy care · 22–28 °C (72–82 °F)
  • Expect Silvertip Tetra to harass Chocolate Gourami at times; give dense cover and watch them at feeding.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Silvertip Tetra in a shoal of 6+ or it gets stressed and nippy.
• Spotfin Betta⚠️ With caution
  Semi-aggressive · 5 cm · Medium care · 23–28 °C (73–82 °F)
  • Spotfin Betta is semi-aggressive and may chase or nip the smaller Chocolate Gourami — plant heavily and break up sight lines.
  • Chocolate Gourami and Spotfin Betta are both labyrinth fish and often treat each other as rivals — give a large, broken-up tank and be ready to separate them.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Stoliczka's Barb⚠️ With caution
  Peaceful · 5 cm · Easy care · 20–26 °C (68–79 °F)
  • Different pH ranges (4–6 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Stoliczka's Barb in a shoal of 6+ or it gets stressed and nippy.
• Striped Red-Eye Puffer⚠️ With caution
  Aggressive · 5 cm · Hard care · 24–28 °C (75–82 °F)
  • Different pH ranges (4–6 vs 6.8–7.8); doable if you sit in the shared band, but not ideal long-term.
  • Striped Red-Eye Puffer and Chocolate Gourami are close in size, but the aggressive one tends to dominate — add chocolate gourami in a group to spread the pressure.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Wine Red Betta⚠️ With caution
  Aggressive · 5 cm · Medium care · 24–28 °C (75–82 °F)
  • Wine Red Betta is aggressive and may chase or nip the smaller Chocolate Gourami — plant heavily and break up sight lines.
  • Chocolate Gourami and Wine Red Betta are both labyrinth fish and often treat each other as rivals — give a large, broken-up tank and be ready to separate them.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Xingu Black Neon Tetra⚠️ With caution
  Peaceful · 5 cm · Medium care · 24–28 °C (75–82 °F)
  • Different pH ranges (4–6 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Xingu Black Neon Tetra in a shoal of 8+ or it gets stressed and nippy.
• Zebra Danio⚠️ With caution
  Peaceful · 5 cm · Easy care · 18–25 °C (64–77 °F)
  • pH preferences only just meet (Chocolate Gourami 4–6 vs Zebra Danio 6.5–7.5) — target the overlap and acclimate slowly.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Keep Zebra Danio in a shoal of 6+ or it gets stressed and nippy.
• Alligator Gar⛔ Not recommended
  Aggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
  • Chocolate Gourami is bite-sized to a 250 cm predatory alligator gar — it will be eaten.
  • pH preferences only just meet (Chocolate Gourami 4–6 vs Alligator Gar 6.8–7.8) — target the overlap and acclimate slowly.
  • Expect Alligator Gar to harass Chocolate Gourami 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.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Clown Knifefish⛔ Not recommended
  Aggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
  • Size gap is too large (90 vs 5 cm): Clown Knifefish will treat Chocolate Gourami as food.
  • Expect Clown Knifefish to harass Chocolate Gourami at times; give dense cover and watch them at feeding.
  • Your 75 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Fire Eel⛔ Not recommended
  Semi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
  • Chocolate Gourami is bite-sized to a 100 cm predatory fire eel — it will be eaten.
  • Different pH ranges (4–6 vs 6.5–7.5); doable if you sit in the shared band, but not ideal long-term.
  • Expect Fire Eel to harass Chocolate Gourami 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.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Koi⛔ Not recommended
  Peaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
  • Koi (90 cm) is big enough to swallow the 5 cm Chocolate Gourami whole.
  • Different pH ranges (4–6 vs 6.5–8.5); doable if you sit in the shared band, but not ideal long-term.
  • Water hardness preferences differ (Chocolate Gourami 0–5 vs Koi 9–18 dGH).
  • Your 75 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Redtail Catfish⛔ Not recommended
  Aggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
  • Redtail Catfish (120 cm) is big enough to swallow the 5 cm Chocolate Gourami whole.
  • Redtail Catfish clearly outsizes Chocolate Gourami and is aggressive; risky unless the tank is big and well-planted.
  • Your 75 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Spotted Gar⛔ Not recommended
  Aggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
  • Size gap is too large (90 vs 5 cm): Spotted Gar will treat Chocolate Gourami as food.
  • pH preferences only just meet (Chocolate Gourami 4–6 vs Spotted Gar 6.5–7.5) — target the overlap and acclimate slowly.
  • Spotted Gar clearly outsizes Chocolate Gourami and is aggressive; risky unless the tank is big and well-planted.
  • Your 75 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Wels Catfish⛔ Not recommended
  Aggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
  • Size gap is too large (300 vs 5 cm): Wels Catfish will treat Chocolate Gourami as food.
  • pH preferences only just meet (Chocolate Gourami 4–6 vs Wels Catfish 6.5–7.5) — target the overlap and acclimate slowly.
  • Expect Wels Catfish to harass Chocolate Gourami at times; give dense cover and watch them at feeding.
  • Your 75 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
• Wolf Cichlid⛔ Not recommended
  Aggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
  • Wolf Cichlid (72 cm) is big enough to swallow the 5 cm Chocolate Gourami whole.
  • Different pH ranges (4–6 vs 7–8); doable if you sit in the shared band, but not ideal long-term.
  • Water hardness preferences differ (Chocolate Gourami 0–5 vs Wolf Cichlid 8–20 dGH).
  • Wolf Cichlid is aggressive and may chase or nip the smaller Chocolate Gourami — plant heavily and break up sight lines.
  • Your 75 L tank is below the ~760 L this pairing really wants — crowding raises aggression.
  • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.

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.