Platinum Acara Tank Mates

Platinum Acara is semi-aggressive, so its tank mates need choosing with care. Here are the 17 freshwater species that pair well with a platinum acara — plus the 59 to avoid — with a live checker you can tune to your own tank.

The best tank mates for a platinum acara

  • Porthole Catfish ✅ Compatible
    Easy care · Peaceful · 10 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Upside-down Catfish ✅ Compatible
    Easy care · Peaceful · 10 cm · 22–26 °C (72–79 °F)
    Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Bristlenose Pleco ✅ Compatible
    Easy care · Peaceful · 12 cm · 23–30 °C (73–86 °F)
    Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
  • Giant Kuhli Loach ✅ Compatible
    Easy care · Peaceful · 12 cm · 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.
  • Rubber Lip Pleco ✅ Compatible
    Easy care · Peaceful · 12 cm · 20–26 °C (68–79 °F)
    Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Marbled Hoplo ✅ Compatible
    Easy care · Peaceful · 14 cm · 22–28 °C (72–82 °F)
    Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
  • Spotted Talking Catfish ✅ Compatible
    Easy care · Peaceful · 15 cm · 22–26 °C (72–79 °F)
    Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Weather Loach ✅ Compatible
    Easy care · Peaceful · 25 cm · 5–24 °C (41–75 °F)
    Compatible on the things that matter: shared water near 23–24 °C, workable temperaments, and no predator-and-prey size gap.
  • Clown Pleco ✅ Compatible
    Medium care · Peaceful · 9 cm · 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.
  • Leopard Frog Pleco ✅ Compatible
    Medium care · Peaceful · 9 cm · 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.
  • Bearded Corydoras ✅ Compatible
    Medium care · Peaceful · 10 cm · 18–24 °C (64–75 °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.
  • Medusa Pleco ✅ Compatible
    Medium care · Peaceful · 12 cm · 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.
  • Spotted Rubbernose Pleco ✅ Compatible
    Medium care · Peaceful · 12 cm · 20–26 °C (68–79 °F)
    Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Striped Eel Loach ✅ Compatible
    Medium care · Peaceful · 12 cm · 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.
  • Banjo Catfish ✅ Compatible
    Medium care · Peaceful · 15 cm · 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.
  • Snowball Pleco ✅ Compatible
    Medium care · Peaceful · 16 cm · 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.
  • Zebra Pleco ✅ Compatible
    Hard care · Peaceful · 10 cm · 26–30 °C (79–86 °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.

Platinum Acara tank mates that can work with care

  • Adolf's Cory ⚠️ With caution
    Medium care · Peaceful · 5.5 cm · 22–26 °C (72–79 °F)
    Platinum Acara may bully the smaller Adolf's Cory, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
  • Afra Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 10 cm · 24–28 °C (75–82 °F)
    Different pH ranges (6.5–7.5 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)
    Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • African Dwarf Frog ⚠️ With caution
    Medium care · Peaceful · 4 cm · 22–26 °C (72–79 °F)
    African Dwarf Frog is small enough to tempt Platinum Acara; only risk it in a densely planted setup with hiding spots.
  • Agassiz's Corydoras ⚠️ With caution
    Easy care · Peaceful · 6 cm · 22–28 °C (72–82 °F)
    Platinum Acara may bully the smaller Agassiz's Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
  • Agassiz's Dwarf Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 9 cm · 24–30 °C (75–86 °F)
    Platinum Acara and Agassiz's Dwarf Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
  • Altifrons Geophagus ⚠️ With caution
    Medium care · Semi-aggressive · 25 cm · 24–28 °C (75–82 °F)
    Platinum Acara and Altifrons Geophagus can both be territorial; doable with space and dense planting, but watch for chasing.
  • Amano Shrimp ⚠️ With caution
    Easy care · Peaceful · 5 cm · 18–28 °C (64–82 °F)
    Platinum Acara may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.

+ 256 more “with caution” pairings — see the interactive checker above.

Fish to avoid keeping with a platinum acara

  • Wels Catfish ⛔ Avoid
    Hard care · Aggressive · 300 cm · 15–25 °C (59–77 °F)
    Two assertive fish, one genuinely aggressive: Platinum Acara and Wels Catfish will hold territory and clash.
  • Alligator Gar ⛔ Avoid
    Hard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)
    Two assertive fish, one genuinely aggressive: Platinum Acara and Alligator Gar will hold territory and clash.
  • Redtail Catfish ⛔ Avoid
    Hard care · Aggressive · 120 cm · 24–27 °C (75–81 °F)
    Two assertive fish, one genuinely aggressive: Platinum Acara and Redtail Catfish will hold territory and clash.
  • 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 20 cm Platinum Acara whole.
  • Clown Knifefish ⛔ Avoid
    Hard care · Aggressive · 90 cm · 24–28 °C (75–82 °F)
    Platinum Acara and Clown Knifefish are both territorial and at least one is outright aggressive — expect serious fighting.
  • Koi ⛔ Avoid
    Medium care · Peaceful · 90 cm · 4–28 °C (39–82 °F)
    Koi (90 cm) is big enough to swallow the 20 cm Platinum Acara whole.
  • Spotted Gar ⛔ Avoid
    Hard care · Aggressive · 90 cm · 18–26 °C (64–79 °F)
    Two assertive fish, one genuinely aggressive: Platinum Acara and Spotted Gar will hold territory and clash.
  • Wolf Cichlid ⛔ Avoid
    Hard care · Aggressive · 72 cm · 24–30 °C (75–86 °F)
    Platinum Acara and Wolf Cichlid are both territorial and at least one is outright aggressive — expect serious fighting.

+ 51 more to avoid — the checker above flags every one.

Check any fish against a platinum acara

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

Will it live with a Platinum Acara?

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

  • Banjo Catfish✅ Compatible
    Peaceful · 15 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.
  • Bearded Corydoras✅ Compatible
    Peaceful · 10 cm · Medium care · 18–24 °C (64–75 °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 Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Bristlenose Pleco✅ Compatible
    Peaceful · 12 cm · Easy care · 23–30 °C (73–86 °F)
    • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
  • 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.
  • Giant Kuhli Loach✅ Compatible
    Peaceful · 12 cm · Easy 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.
  • 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, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
  • Medusa Pleco✅ Compatible
    Peaceful · 12 cm · Medium 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.
  • Porthole Catfish✅ Compatible
    Peaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Rubber Lip Pleco✅ Compatible
    Peaceful · 12 cm · Easy care · 20–26 °C (68–79 °F)
    • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Snowball Pleco✅ Compatible
    Peaceful · 16 cm · Medium 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.
  • Peaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
    • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Peaceful · 15 cm · Easy care · 22–26 °C (72–79 °F)
    • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • 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.
  • Upside-down Catfish✅ Compatible
    Peaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
    • Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 23–26 °C — no size, zone or temperament conflicts.
  • Weather Loach✅ Compatible
    Peaceful · 25 cm · Easy care · 5–24 °C (41–75 °F)
    • Compatible on the things that matter: shared water near 23–24 °C, workable temperaments, and no predator-and-prey size gap.
  • Zebra Pleco✅ Compatible
    Peaceful · 10 cm · Hard care · 26–30 °C (79–86 °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.
  • Altifrons Geophagus⚠️ With caution
    Semi-aggressive · 25 cm · Medium care · 24–28 °C (75–82 °F)
    • Platinum Acara and Altifrons Geophagus can both be territorial; doable with space and dense planting, but watch for chasing.
    • Your 200 L tank is below the ~378 L this pairing really wants — crowding raises aggression.
    • Keep Altifrons Geophagus in a shoal of 6+ or it gets stressed and nippy.
  • Angelicus Synodontis⚠️ With caution
    Semi-aggressive · 25 cm · Medium care · 23–27 °C (73–81 °F)
    • Platinum Acara and Angelicus Synodontis can both be territorial; doable with space and dense planting, but watch for chasing.
  • Blood Parrot Cichlid⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 24–28 °C (75–82 °F)
    • Platinum Acara and Blood Parrot Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
  • Discus⚠️ With caution
    Peaceful · 20 cm · Hard care · 28–31 °C (82–88 °F)
    • Expect Platinum Acara to harass Discus at times; give dense cover and watch them at feeding.
    • Keep Discus in a shoal of 6+ or it gets stressed and nippy.
  • Electric Blue Acara⚠️ With caution
    Semi-aggressive · 16 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.
  • Electric Blue Hap⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Platinum Acara 6.5–7.5 vs Electric Blue Hap 7.8–8.5) — target the overlap and acclimate slowly.
    • Platinum Acara and Electric Blue Hap can both be territorial; doable with space and dense planting, but watch for chasing.
    • Your 200 L tank is below the ~250 L this pairing really wants — crowding raises aggression.
  • Emperor Peacock Cichlid⚠️ With caution
    Semi-aggressive · 16 cm · Medium care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Platinum Acara 6.5–7.5 vs Emperor Peacock Cichlid 7.6–8.6) — target the overlap and acclimate slowly.
    • Platinum Acara and Emperor Peacock Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
    • Your 200 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
  • Fire Blue Empress Cichlid⚠️ With caution
    Semi-aggressive · 18 cm · Medium care · 24–28 °C (75–82 °F)
    • Platinum Acara and Fire Blue Empress Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
    • Your 200 L tank is below the ~400 L this pairing really wants — crowding raises aggression.
  • Galaxy Pleco⚠️ With caution
    Semi-aggressive · 25 cm · Medium care · 22–26 °C (72–79 °F)
    • Platinum Acara and Galaxy Pleco can both be territorial; doable with space and dense planting, but watch for chasing.
  • Goldie Pleco⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 24–29 °C (75–84 °F)
    • Platinum Acara and Goldie Pleco can both be territorial; doable with space and dense planting, but watch for chasing.
  • Green Severum⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 23–29 °C (73–84 °F)
    • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
    • Your 200 L tank is below the ~208 L this pairing really wants — crowding raises aggression.
  • Guyana Flag Cichlid⚠️ With caution
    Semi-aggressive · 18 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.
  • Honeycomb Pleco⚠️ With caution
    Semi-aggressive · 21 cm · Medium care · 24–29 °C (75–84 °F)
    • Platinum Acara and Honeycomb Pleco can both be territorial; doable with space and dense planting, but watch for chasing.
    • Your 200 L tank is below the ~280 L this pairing really wants — crowding raises aggression.
  • Spanner Barb⚠️ With caution
    Semi-aggressive · 18 cm · Medium care · 23–29 °C (73–84 °F)
    • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
    • Spanner Barb is a notorious fin-nipper — even though Platinum Acara is larger, an active shoal will harass its trailing fins. Only safe in a full group of 6+ with plenty of cover.
    • Your 200 L tank is below the ~208 L this pairing really wants — crowding raises aggression.
    • Keep Spanner Barb in a shoal of 6+ or it gets stressed and nippy.
  • Striped Raphael Catfish⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 24–28 °C (75–82 °F)
    • Platinum Acara and Striped Raphael Catfish can both be territorial; doable with space and dense planting, but watch for chasing.
  • Tiger Loach⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 23–27 °C (73–81 °F)
    • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
  • Alligator Gar⛔ Not recommended
    Aggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
    • Two assertive fish, one genuinely aggressive: Platinum Acara and Alligator Gar will hold territory and clash.
    • Size gap is too large (250 vs 20 cm): Alligator Gar will treat Platinum Acara as food.
    • Your 200 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)
    • Platinum Acara and Clown Knifefish are both territorial and at least one is outright aggressive — expect serious fighting.
    • Size gap is too large (90 vs 20 cm): Clown Knifefish will treat Platinum Acara as food.
    • Your 200 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)
    • Fire Eel (100 cm) is big enough to swallow the 20 cm Platinum Acara whole.
    • Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
    • Your 200 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 20 cm Platinum Acara whole.
    • Your 200 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: Platinum Acara and Redtail Catfish will hold territory and clash.
    • Redtail Catfish (120 cm) is big enough to swallow the 20 cm Platinum Acara whole.
    • Your 200 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: Platinum Acara and Spotted Gar will hold territory and clash.
    • Platinum Acara is bite-sized to a 90 cm predatory spotted gar — it will be eaten.
    • Your 200 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: Platinum Acara and Wels Catfish will hold territory and clash.
    • Wels Catfish (300 cm) is big enough to swallow the 20 cm Platinum Acara whole.
    • Your 200 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)
    • Platinum Acara and Wolf Cichlid are both territorial and at least one is outright aggressive — expect serious fighting.
    • Platinum Acara is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.
    • Your 200 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.

Setting up a platinum acara community tank

Give the group a stable, planted 200 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 the right tank mates for a platinum acara

Being semi-aggressive, platinum acara can nip or harass smaller, slower or long-finned fish — give it space, broken sight-lines and similarly robust companions. It mostly occupies the middle of the tank, so it pairs naturally with species that use the other levels.

Platinum Acara grows to about 20 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 10 cm. Match its water, too: aim for 23–28 °C (73–82 °F), pH 6.5–7.5 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.

Platinum Acara doesn't need its own kind to feel secure; think twice before keeping more than one if it is territorial. Whatever you add, introduce new fish slowly, watch for bullying in the first days, and have a backup plan if temperaments clash.

Frequently asked questions

Can a platinum acara live with other fish?

Yes — with the right companions. Our checker finds 17 compatible freshwater species for platinum acara. 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 platinum acara?

Easy, peaceful, similarly-sized species top the list — for example Porthole Catfish, Upside-down Catfish, Bristlenose Pleco. Use the checker above to match against your own tank size.

What fish should you avoid keeping with a platinum acara?

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 platinum acara tank mates need?

Start from Platinum Acara's own minimum and scale up with every addition. The checker above defaults to a 200 L community tank and flags pairings that need more room — drag the slider to match your setup.