Julii Corydoras Tank Mates

• Axelrod's Cory✅ Compatible
  Peaceful · 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 bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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 23–26 °C — no size, zone or temperament conflicts.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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.
• Blue Turbo Snail✅ Compatible
  Peaceful · 5 cm · Medium care · 25–30 °C (77–86 °F)
  • Both are peaceful, and their water overlaps around 25–26 °C — no size, zone or temperament conflicts.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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, and their water overlaps around 23–25 °C — no size, zone or temperament conflicts.
  • Keep Julii Corydoras 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)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Julii Corydoras 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.
• Chocolate Gourami✅ Compatible
  Peaceful · 5 cm · Hard care · 25–30 °C (77–86 °F)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Chocolate Gourami 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 23–26 °C — no size, zone or temperament conflicts.
  • Keep Julii Corydoras 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.
• Firehead Tetra✅ Compatible
  Peaceful · 5 cm · Medium care · 24–28 °C (75–82 °F)
  • Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Julii Corydoras 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)
  • Compatible on the things that matter: shared water near 23–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Julii Corydoras 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.
• Forktail Blue-eye✅ Compatible
  Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are peaceful, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Keep Julii Corydoras 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.
• 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.
  • Keep Julii Corydoras 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; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Julii Corydoras 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, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Keep Julii Corydoras 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; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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.
• Japanese Trapdoor Snail✅ Compatible
  Peaceful · 5 cm · Easy care · 10–28 °C (50–82 °F)
  • Compatible on the things that matter: shared water near 23–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Masked Corydoras✅ Compatible
  Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are peaceful, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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.
• Mystery Snail✅ Compatible
  Peaceful · 5 cm · Easy care · 20–28 °C (68–82 °F)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Keep Julii Corydoras 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)
  • Both are peaceful, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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 23–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Julii Corydoras 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.
• Silvertip Tetra✅ Compatible
  Semi-aggressive · 5 cm · Easy care · 22–28 °C (72–82 °F)
  • Compatible on the things that matter: shared water near 23–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Julii Corydoras 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.
• Skunk Corydoras✅ Compatible
  Peaceful · 5 cm · Easy care · 22–26 °C (72–79 °F)
  • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Julii Corydoras 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.
• Spotfin Betta✅ Compatible
  Semi-aggressive · 5 cm · Medium care · 23–28 °C (73–82 °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.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Stoliczka's Barb✅ Compatible
  Peaceful · 5 cm · Easy care · 20–26 °C (68–79 °F)
  • Both are peaceful, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Keep Julii Corydoras 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.
• Wine Red Betta✅ Compatible
  Aggressive · 5 cm · Medium care · 24–28 °C (75–82 °F)
  • Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• African Butterfly Cichlid⚠️ With caution
  Semi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras 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)
  • Adult Amano Shrimp might survive with Julii Corydoras, but expect the young to be eaten — plant heavily.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Amazon Puffer⚠️ With caution
  Peaceful · 8 cm · Medium care · 23–28 °C (73–82 °F)
  • Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Amazon Puffer in a shoal of 6+ or it gets stressed and nippy.
• Ash Lipped Apisto⚠️ With caution
  Semi-aggressive · 7 cm · Hard care · 24–29 °C (75–84 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras 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)
  • Your 75 L tank is below the ~100 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras 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.
• Bleeding Heart Tetra⚠️ With caution
  Semi-aggressive · 7 cm · Medium care · 23–28 °C (73–82 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Bleeding Heart Tetra in a shoal of 6+ or it gets stressed and nippy.
• Bright Diamond Tetra⚠️ With caution
  Peaceful · 7 cm · Hard care · 24–28 °C (75–82 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Bright Diamond Tetra in a shoal of 8+ or it gets stressed and nippy.
• Buenos Aires Tetra⚠️ With caution
  Semi-aggressive · 7 cm · Easy care · 18–26 °C (64–79 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Buenos Aires Tetra in a shoal of 6+ or it gets stressed and nippy.
• Colombian Tetra⚠️ With caution
  Semi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
  • Your 75 L tank is below the ~114 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Colombian Tetra in a shoal of 6+ or it gets stressed and nippy.
• Dwarf Chain Loach⚠️ With caution
  Peaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Dwarf Chain Loach in a shoal of 6+ or it gets stressed and nippy.
• Ghost Shrimp⚠️ With caution
  Peaceful · 4 cm · Easy care · 18–28 °C (64–82 °F)
  • Julii Corydoras may eat Ghost Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Ghost Shrimp 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)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras 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.
• Melon Barb⚠️ With caution
  Peaceful · 7 cm · Easy care · 22–28 °C (72–82 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Melon Barb in a shoal of 8+ 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 Julii Corydoras 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.
• Rounded Filament Barb⚠️ With caution
  Peaceful · 7 cm · Medium care · 22–27 °C (72–81 °F)
  • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Rounded Filament Barb in a shoal of 6+ or it gets stressed and nippy.
• Tiger Barb⚠️ With caution
  Semi-aggressive · 7 cm · Easy care · 22–28 °C (72–82 °F)
  • Your 75 L tank is below the ~95 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Tiger Barb in a shoal of 6+ or it gets stressed and nippy.
• Discus⛔ Not recommended
  Peaceful · 20 cm · Hard care · 28–31 °C (82–88 °F)
  • Temperature needs don't overlap (Julii Corydoras 23–26 °C vs Discus 28–31 °C).
  • Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Discus in a shoal of 6+ or it gets stressed and nippy.
• German Blue Ram⛔ Not recommended
  Peaceful · 6 cm · Hard care · 27–30 °C (81–86 °F)
  • Temperature needs don't overlap (Julii Corydoras 23–26 °C vs German Blue Ram 27–30 °C).
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Goldfish⛔ Not recommended
  Peaceful · 30 cm · Medium care · 18–22 °C (64–72 °F)
  • Temperature needs don't overlap (Julii Corydoras 23–26 °C vs Goldfish 18–22 °C).
  • Goldfish may bully the smaller Julii Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
  • Your 75 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Imperial Flower Loach⛔ Not recommended
  Semi-aggressive · 50 cm · Hard care · 15–22 °C (59–72 °F)
  • Temperature needs don't overlap (Julii Corydoras 23–26 °C vs Imperial Flower Loach 15–22 °C).
  • Imperial Flower Loach may bully the smaller Julii Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
  • Your 75 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
  • Keep Julii Corydoras 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.