Melon Barb Tank Mates

Melon Barb is peaceful, so its tank mates need choosing with care. Here are the 165 freshwater species that pair well with a melon barb — plus the 66 to avoid — with a live checker you can tune to your own tank.

By The Aquarium DB Team • Updated June 8, 2026 • Full Melon Barb care guide →
Best matches

The best tank mates for a melon barb

  • Ember Tetra ✅ Compatible
    Easy care · Peaceful · 2 cm · 24–28 °C (75–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Neon Green Rasbora ✅ Compatible
    Easy care · Peaceful · 2 cm · 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.
  • Ramshorn Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 20–28 °C (68–82 °F)
    Compatible on the things that matter: shared water near 22–28 °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 22–28 °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, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Nerite Snail ✅ 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.
  • Assassin Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 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.
  • Endler's Livebearer ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 22–28 °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 22–26 °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)
    Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
  • Malaysian Trumpet Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 21–27 °C (70–81 °F)
    Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
  • Neon Tetra ✅ Compatible
    Easy care · Peaceful · 3 cm · 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.
  • Tail-spot Corydoras ✅ Compatible
    Easy care · Peaceful · 3 cm · 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.
  • 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 22–26 °C — no size, zone or temperament conflicts.
  • Glowlight Rasbora ✅ Compatible
    Easy care · Peaceful · 3.5 cm · 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.
  • 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)
    Compatible on the things that matter: shared water near 23–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Flame Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 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.
  • Glowlight Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 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.
  • 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 23–28 °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 22–28 °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.
With caution

Melon Barb tank mates that can work with care

  • Afra Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 10 cm · 24–28 °C (75–82 °F)
    Different pH ranges (6–7.5 vs 7.8–8.6); doable if you sit in the shared band, but not ideal long-term.
  • African Butterfly Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 8 cm · 22–28 °C (72–82 °F)
    African Butterfly Cichlid is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
  • Agassiz's Dwarf Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 9 cm · 24–30 °C (75–86 °F)
    Expect Agassiz's Dwarf Cichlid to harass Melon Barb 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)
    Melon Barb may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Amazon Puffer ⚠️ With caution
    Medium care · Peaceful · 8 cm · 23–28 °C (73–82 °F)
    Your 80 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 Melon Barb 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)
    Arrowhead Puffer is aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
  • Ash Lipped Apisto ⚠️ With caution
    Hard care · Semi-aggressive · 7 cm · 24–29 °C (75–84 °F)
    Ash Lipped Apisto and Melon Barb are close in size, but the semi-aggressive one tends to dominate — add melon barb in a group to spread the pressure.

+ 101 more “with caution” pairings — see the interactive checker above.

Avoid

Fish to avoid keeping with a melon barb

  • Wels Catfish ⛔ Avoid
    Hard care · Aggressive · 300 cm · 15–25 °C (59–77 °F)
    Size gap is too large (300 vs 7 cm): Wels Catfish will treat Melon Barb as food.
  • Alligator Gar ⛔ Avoid
    Hard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)
    Alligator Gar (250 cm) is big enough to swallow the 7 cm Melon Barb whole.
  • Redtail Catfish ⛔ Avoid
    Hard care · Aggressive · 120 cm · 24–27 °C (75–81 °F)
    Redtail Catfish (120 cm) is big enough to swallow the 7 cm Melon Barb whole.
  • Fire Eel ⛔ Avoid
    Medium care · Semi-aggressive · 100 cm · 24–28 °C (75–82 °F)
    Fire Eel (100 cm) is big enough to swallow the 7 cm Melon Barb whole.
  • Clown Knifefish ⛔ Avoid
    Hard care · Aggressive · 90 cm · 24–28 °C (75–82 °F)
    Size gap is too large (90 vs 7 cm): Clown Knifefish will treat Melon Barb as food.
  • Koi ⛔ Avoid
    Medium care · Peaceful · 90 cm · 4–28 °C (39–82 °F)
    Koi (90 cm) is big enough to swallow the 7 cm Melon Barb whole.
  • Spotted Gar ⛔ Avoid
    Hard care · Aggressive · 90 cm · 18–26 °C (64–79 °F)
    Spotted Gar (90 cm) is big enough to swallow the 7 cm Melon Barb whole.
  • Wolf Cichlid ⛔ Avoid
    Hard care · Aggressive · 72 cm · 24–30 °C (75–86 °F)
    Wolf Cichlid (72 cm) is big enough to swallow the 7 cm Melon Barb whole.

+ 58 more to avoid — the checker above flags every one.

Interactive tool

Check any fish against a melon barb

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

Tank-mate checker

Will it live with a Melon Barb?

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

  • Agassiz's Corydoras✅ 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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Agassiz's Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Bamboo Shrimp✅ 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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Betta✅ Compatible
    Semi-aggressive · 6.5 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.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Black Kuhli Loach✅ Compatible
    Peaceful · 8 cm · Easy care · 23–28 °C (73–82 °F)
    • Both are peaceful, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Black Skirt Tetra✅ 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.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Melon Barb in a shoal of 8+ 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)
    • Compatible on the things that matter: shared water near 22–28 °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 Melon Barb in a shoal of 8+ 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)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • 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.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Bright Diamond Tetra✅ Compatible
    Peaceful · 7 cm · Hard care · 24–28 °C (75–82 °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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Bright Diamond Tetra in a shoal of 8+ 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.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Celebes Rainbowfish✅ Compatible
    Peaceful · 7 cm · Medium 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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Celebes Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
  • Corydoras Catfish✅ Compatible
    Peaceful · 6.5 cm · Easy care · 22–26 °C (72–79 °F)
    • Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Corydoras Catfish in a shoal of 6+ or it gets stressed and nippy.
  • Costa's Tetra✅ Compatible
    Peaceful · 7 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.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • 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)
    • 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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Glass Catfish✅ Compatible
    Peaceful · 8 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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Glass Catfish in a shoal of 6+ or it gets stressed and nippy.
  • Gold Barb✅ Compatible
    Peaceful · 7.5 cm · Easy care · 18–26 °C (64–79 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Gold Barb in a shoal of 6+ or it gets stressed and nippy.
  • Peacock Gudgeon✅ Compatible
    Peaceful · 7 cm · Medium 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 middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Peppered Corydoras✅ Compatible
    Peaceful · 7 cm · Easy care · 18–26 °C (64–79 °F)
    • Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Peppered Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Rio Negro Checkerboard Cichlid✅ Compatible
    Peaceful · 7 cm · Hard care · 24–29 °C (75–84 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Rounded Filament Barb✅ Compatible
    Peaceful · 7 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.
    • Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Rounded Filament Barb 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 22–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Splashing Tetra in a shoal of 6+ or it gets stressed and nippy.
  • 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 Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • 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)
    • Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Spotted Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Sterbai Corydoras✅ Compatible
    Peaceful · 6.5 cm · Medium 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.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Sterbai 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)
    • African Butterfly Cichlid is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Amazon Puffer⚠️ With caution
    Peaceful · 8 cm · Medium care · 23–28 °C (73–82 °F)
    • Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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)
    • Ash Lipped Apisto and Melon Barb are close in size, but the semi-aggressive one tends to dominate — add melon barb in a group to spread the pressure.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Badis⚠️ With caution
    Semi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °F)
    • Expect Badis to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Banded Dwarf Cichlid⚠️ With caution
    Semi-aggressive · 7 cm · Medium care · 24–30 °C (75–86 °F)
    • Banded Dwarf Cichlid is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Bleeding Heart Tetra⚠️ With caution
    Semi-aggressive · 7 cm · Medium care · 23–28 °C (73–82 °F)
    • Expect Bleeding Heart Tetra to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Bleeding Heart Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Buenos Aires Tetra⚠️ With caution
    Semi-aggressive · 7 cm · Easy care · 18–26 °C (64–79 °F)
    • Buenos Aires Tetra is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Buenos Aires Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Cockatoo Dwarf Cichlid⚠️ With caution
    Semi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °F)
    • Expect Cockatoo Dwarf Cichlid to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Colombian Tetra⚠️ With caution
    Semi-aggressive · 6.5 cm · Easy care · 24–28 °C (75–82 °F)
    • Your 80 L tank is below the ~114 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Congo Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Hongsloi Dwarf Cichlid⚠️ With caution
    Semi-aggressive · 7 cm · Medium care · 24–29 °C (75–84 °F)
    • Hongsloi Dwarf Cichlid and Melon Barb are close in size, but the semi-aggressive one tends to dominate — add melon barb in a group to spread the pressure.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Mahachai Betta⚠️ With caution
    Aggressive · 7 cm · Medium care · 24–30 °C (75–86 °F)
    • Mahachai Betta and Melon Barb are close in size, but the aggressive one tends to dominate — add melon barb in a group to spread the pressure.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Roundtail Paradise Fish⚠️ With caution
    Semi-aggressive · 7 cm · Easy care · 10–26 °C (50–79 °F)
    • Expect Roundtail Paradise Fish to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Sumo Loach⚠️ With caution
    Semi-aggressive · 7 cm · Medium care · 22–26 °C (72–79 °F)
    • Sumo Loach is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Tiger Barb⚠️ With caution
    Semi-aggressive · 7 cm · Easy care · 22–28 °C (72–82 °F)
    • Tiger Barb is semi-aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
    • Your 80 L tank is below the ~95 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
    • Keep Tiger Barb in a shoal of 6+ or it gets stressed and nippy.
  • Umbrella Dwarf Cichlid⚠️ With caution
    Semi-aggressive · 7 cm · Medium care · 20–26 °C (68–79 °F)
    • Expect Umbrella Dwarf Cichlid to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Keep Melon Barb 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 7 cm Melon Barb whole.
    • Expect Alligator Gar to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Your 80 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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 7 cm): Clown Knifefish will treat Melon Barb as food.
    • Clown Knifefish is aggressive and may chase or nip the smaller Melon Barb — plant heavily and break up sight lines.
    • Your 80 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Fire Eel⛔ Not recommended
    Semi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
    • Fire Eel (100 cm) is big enough to swallow the 7 cm Melon Barb whole.
    • Fire Eel clearly outsizes Melon Barb and is semi-aggressive; risky unless the tank is big and well-planted.
    • Your 80 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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 7 cm Melon Barb whole.
    • Your 80 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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 7 cm Melon Barb whole.
    • Redtail Catfish clearly outsizes Melon Barb and is aggressive; risky unless the tank is big and well-planted.
    • Your 80 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ or it gets stressed and nippy.
  • Spotted Gar⛔ Not recommended
    Aggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
    • Spotted Gar (90 cm) is big enough to swallow the 7 cm Melon Barb whole.
    • Expect Spotted Gar to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Your 80 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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 7 cm): Wels Catfish will treat Melon Barb as food.
    • Wels Catfish clearly outsizes Melon Barb and is aggressive; risky unless the tank is big and well-planted.
    • Your 80 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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 7 cm Melon Barb whole.
    • Expect Wolf Cichlid to harass Melon Barb at times; give dense cover and watch them at feeding.
    • Your 80 L tank is below the ~760 L this pairing really wants — crowding raises aggression.
    • Keep Melon Barb in a shoal of 8+ 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.

Setting up a melon barb community tank

Give the group a stable, planted 80 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 melon barb

As a peaceful species, melon barb 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.

Melon Barb grows to about 7 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 4 cm. Match its water, too: aim for 22–28 °C (72–82 °F), pH 6–7.5 and 4–15 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.

Melon Barb is a shoaling fish — stock a group of 8+ of its own kind first, then build compatible tank mates around them. 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 melon barb live with other fish?

Yes — with the right companions. Our checker finds 165 compatible freshwater species for melon barb. 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 melon barb?

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 melon barb?

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 melon barb tank mates need?

Start from Melon Barb's own minimum and scale up with every addition. The checker above defaults to a 80 L community tank and flags pairings that need more room — drag the slider to match your setup.

← Back to the full Melon Barb care guide