Agassiz's Corydoras Tank Mates

• Black Skirt Tetra✅ Compatible
  Semi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Black Skirt Tetra in a shoal of 6+ or it gets stressed and nippy.
• Blackline Rasbora✅ Compatible
  Peaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Blackline Rasbora in a shoal of 6+ or it gets stressed and nippy.
• Blood Red Tiger Pleco✅ Compatible
  Peaceful · 6 cm · Medium care · 24–29 °C (75–84 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Butterfly Hillstream Loach✅ Compatible
  Peaceful · 6 cm · Hard care · 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.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Desert Goby✅ Compatible
  Semi-aggressive · 6 cm · Easy care · 18–28 °C (64–82 °F)
  • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–28 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Diamond Tetra✅ Compatible
  Peaceful · 6 cm · Easy care · 22–28 °C (72–82 °F)
  • Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Diamond Tetra in a shoal of 6+ or it gets stressed and nippy.
• Eastern Betta✅ Compatible
  Semi-aggressive · 6 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.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Elegant Cory✅ Compatible
  Peaceful · 6 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.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Elegant Cory in a shoal of 6+ or it gets stressed and nippy.
• False Julii Corydoras✅ Compatible
  Peaceful · 6 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.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep False Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
• German Blue Ram✅ Compatible
  Peaceful · 6 cm · Hard care · 27–30 °C (81–86 °F)
  • Compatible on the things that matter: shared water near 27–28 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Glass Bloodfin Tetra✅ Compatible
  Peaceful · 6 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.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Glass Bloodfin Tetra in a shoal of 6+ or it gets stressed and nippy.
• GloFish Tetra✅ Compatible
  Semi-aggressive · 6 cm · Easy care · 21–28 °C (70–82 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep GloFish Tetra in a shoal of 6+ or it gets stressed and nippy.
• Guppy✅ Compatible
  Peaceful · 6 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.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Hillstream Loach✅ Compatible
  Peaceful · 6 cm · Hard care · 20–24 °C (68–75 °F)
  • Compatible on the things that matter: shared water near 22–24 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Neon Dwarf Rainbowfish✅ Compatible
  Peaceful · 6 cm · Easy care · 23–27 °C (73–81 °F)
  • Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Neon Dwarf Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
• Odessa Barb✅ Compatible
  Semi-aggressive · 6 cm · Easy 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.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Odessa Barb in a shoal of 6+ or it gets stressed and nippy.
• Panda Loach✅ Compatible
  Peaceful · 6 cm · Hard care · 18–23 °C (64–73 °F)
  • Both are peaceful, and their water overlaps around 22–23 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Peaceful Betta✅ Compatible
  Semi-aggressive · 6 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.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Pearl Danio✅ Compatible
  Peaceful · 6 cm · Easy care · 20–25 °C (68–77 °F)
  • Compatible on the things that matter: shared water near 22–25 °C, workable temperaments, and no predator-and-prey size gap.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Pearl Danio in a shoal of 6+ or it gets stressed and nippy.
• Platy✅ Compatible
  Peaceful · 6 cm · Easy care · 21–28 °C (70–82 °F)
  • Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Samurai Gourami✅ Compatible
  Peaceful · 6 cm · Hard care · 24–28 °C (75–82 °F)
  • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Slate Corydoras✅ Compatible
  Peaceful · 6 cm · Medium care · 23–28 °C (73–82 °F)
  • Compatible on the things that matter: shared water near 23–28 °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 Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Slate Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Smaragd Betta✅ Compatible
  Aggressive · 6 cm · Medium care · 23–28 °C (73–82 °F)
  • Peaceful + Aggressive, but with no direct clash here, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
• Three-striped Dwarf Cichlid✅ Compatible
  Semi-aggressive · 6 cm · Medium care · 23–29 °C (73–84 °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.
  • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Keep Agassiz's 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 Agassiz's 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)
  • Agassiz's Corydoras may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Keep Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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.
• Congo Tetra⚠️ With caution
  Peaceful · 8 cm · Medium care · 22–28 °C (72–82 °F)
  • Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Keep Congo 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 Agassiz's 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.
• 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 Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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 Agassiz's 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.

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.