Green Chromis Tank Mates

Green Chromis is peaceful, so its tank mates need choosing with care. Here are the 15 freshwater species that pair well with a green chromis — plus the 0 to avoid — with a live checker you can tune to your own tank.

By The Aquarium DB Team • Updated June 10, 2026 • Full Green Chromis care guide →
Best matches

The best tank mates for a green chromis

  • Clown Goby ✅ Compatible
    Easy care · Peaceful · 4 cm · 24–27 °C (75–81 °F)
    Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Neon Goby ✅ Compatible
    Easy care · Peaceful · 5 cm · 24–27 °C (75–81 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Banggai Cardinalfish ✅ Compatible
    Easy care · Peaceful · 8 cm · 24–27 °C (75–81 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Blue Damselfish ✅ Compatible
    Easy care · Semi-aggressive · 8 cm · 24–27 °C (75–81 °F)
    Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Firefish ✅ Compatible
    Easy care · Peaceful · 8 cm · 24–27 °C (75–81 °F)
    Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Ocellaris Clownfish ✅ Compatible
    Easy care · Semi-aggressive · 8 cm · 24–27 °C (75–81 °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.
  • Percula Clownfish ✅ Compatible
    Easy care · Semi-aggressive · 8 cm · 24–27 °C (75–81 °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.
  • Royal Gramma ✅ Compatible
    Easy care · Peaceful · 8 cm · 24–27 °C (75–81 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Six Line Wrasse ✅ Compatible
    Easy care · Semi-aggressive · 8 cm · 24–27 °C (75–81 °F)
    Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Yellow Watchman Goby ✅ Compatible
    Easy care · Peaceful · 9 cm · 24–27 °C (75–81 °F)
    Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Bicolor Blenny ✅ Compatible
    Easy care · Semi-aggressive · 10 cm · 24–27 °C (75–81 °F)
    Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Lawnmower Blenny ✅ Compatible
    Easy care · Peaceful · 13 cm · 24–27 °C (75–81 °F)
    Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Clarkii Clownfish ✅ Compatible
    Easy care · Semi-aggressive · 14 cm · 24–27 °C (75–81 °F)
    Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Tomato Clownfish ✅ Compatible
    Easy care · Semi-aggressive · 14 cm · 24–27 °C (75–81 °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.
  • Mandarin Dragonet ✅ Compatible
    Hard care · Peaceful · 8 cm · 24–27 °C (75–81 °F)
    Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
With caution

Green Chromis tank mates that can work with care

  • Bicolor Angelfish ⚠️ With caution
    Medium care · Semi-aggressive · 15 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
  • Blue Tang ⚠️ With caution
    Medium care · Semi-aggressive · 30 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
  • Cleaner Wrasse ⚠️ With caution
    Hard care · Peaceful · 11 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
  • Coral Beauty Angelfish ⚠️ With caution
    Easy care · Semi-aggressive · 10 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
  • Diamond Goby ⚠️ With caution
    Medium care · Peaceful · 15 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
  • Domino Damselfish ⚠️ With caution
    Easy care · Aggressive · 14 cm · 24–27 °C (75–81 °F)
    Expect Domino Damselfish to harass Green Chromis at times; give dense cover and watch them at feeding.
  • Emperor Angelfish ⚠️ With caution
    Hard care · Semi-aggressive · 38 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~850 L this pairing really wants — crowding raises aggression.
  • Flame Angelfish ⚠️ With caution
    Medium care · Semi-aggressive · 10 cm · 24–27 °C (75–81 °F)
    Your 110 L tank is below the ~280 L this pairing really wants — crowding raises aggression.

+ 11 more “with caution” pairings — see the interactive checker above.

Avoid

Fish to avoid keeping with a green chromis

No outright no-gos among the species in our database yet — but always avoid fish much larger, much more aggressive, or needing very different water.

Interactive tool

Check any fish against a green chromis

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

Tank-mate checker

Will it live with a Green Chromis?

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

  • Banggai Cardinalfish✅ Compatible
    Peaceful · 8 cm · Easy care · 24–27 °C (75–81 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Bicolor Blenny✅ Compatible
    Semi-aggressive · 10 cm · Easy care · 24–27 °C (75–81 °F)
    • Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Blue Damselfish✅ Compatible
    Semi-aggressive · 8 cm · Easy care · 24–27 °C (75–81 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Clarkii Clownfish✅ Compatible
    Semi-aggressive · 14 cm · Easy care · 24–27 °C (75–81 °F)
    • Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Clown Goby✅ Compatible
    Peaceful · 4 cm · Easy care · 24–27 °C (75–81 °F)
    • Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Firefish✅ Compatible
    Peaceful · 8 cm · Easy care · 24–27 °C (75–81 °F)
    • Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Lawnmower Blenny✅ Compatible
    Peaceful · 13 cm · Easy care · 24–27 °C (75–81 °F)
    • Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Mandarin Dragonet✅ Compatible
    Peaceful · 8 cm · Hard care · 24–27 °C (75–81 °F)
    • Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Neon Goby✅ Compatible
    Peaceful · 5 cm · Easy care · 24–27 °C (75–81 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Ocellaris Clownfish✅ Compatible
    Semi-aggressive · 8 cm · Easy care · 24–27 °C (75–81 °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 Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Percula Clownfish✅ Compatible
    Semi-aggressive · 8 cm · Easy care · 24–27 °C (75–81 °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 Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Royal Gramma✅ Compatible
    Peaceful · 8 cm · Easy care · 24–27 °C (75–81 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Six Line Wrasse✅ Compatible
    Semi-aggressive · 8 cm · Easy care · 24–27 °C (75–81 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Tomato Clownfish✅ Compatible
    Semi-aggressive · 14 cm · Easy care · 24–27 °C (75–81 °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 Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Yellow Watchman Goby✅ Compatible
    Peaceful · 9 cm · Easy care · 24–27 °C (75–81 °F)
    • Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Bicolor Angelfish⚠️ With caution
    Semi-aggressive · 15 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Blue Tang⚠️ With caution
    Semi-aggressive · 30 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Cleaner Wrasse⚠️ With caution
    Peaceful · 11 cm · Hard care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Coral Beauty Angelfish⚠️ With caution
    Semi-aggressive · 10 cm · Easy care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Diamond Goby⚠️ With caution
    Peaceful · 15 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Domino Damselfish⚠️ With caution
    Aggressive · 14 cm · Easy care · 24–27 °C (75–81 °F)
    • Expect Domino Damselfish to harass Green Chromis at times; give dense cover and watch them at feeding.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Emperor Angelfish⚠️ With caution
    Semi-aggressive · 38 cm · Hard care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~850 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Flame Angelfish⚠️ With caution
    Semi-aggressive · 10 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~280 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Foxface Rabbitfish⚠️ With caution
    Semi-aggressive · 24 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Kole Tang⚠️ With caution
    Semi-aggressive · 18 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~280 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Maroon Clownfish⚠️ With caution
    Aggressive · 15 cm · Medium care · 24–27 °C (75–81 °F)
    • Expect Maroon Clownfish to harass Green Chromis at times; give dense cover and watch them at feeding.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Melanurus Wrasse⚠️ With caution
    Semi-aggressive · 12 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Purple Tang⚠️ With caution
    Semi-aggressive · 25 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~280 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Regal Angelfish⚠️ With caution
    Semi-aggressive · 25 cm · Hard care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~480 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Yellow Coris Wrasse⚠️ With caution
    Peaceful · 12 cm · Easy care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~210 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis in a shoal of 6+ or it gets stressed and nippy.
  • Yellow Tang⚠️ With caution
    Semi-aggressive · 20 cm · Medium care · 24–27 °C (75–81 °F)
    • Your 110 L tank is below the ~280 L this pairing really wants — crowding raises aggression.
    • Keep Green Chromis 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.

Setting up a green chromis community tank

Give the group a stable, planted 110 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 green chromis

As a peaceful species, green chromis is easily bullied — favour other calm, non-nippy fish and steer clear of boisterous or aggressive tank mates. It ranges across the whole water column, so tank mates that keep to one level help reduce friction.

Green Chromis grows to about 8 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 24–27 °C (75–81 °F), pH 8–8.4 and 8–12 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.

Green Chromis is a shoaling fish — stock a group of 6+ 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 green chromis live with other fish?

Yes — with the right companions. Our checker finds 15 compatible freshwater species for green chromis. 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 green chromis?

Easy, peaceful, similarly-sized species top the list — for example Clown Goby, Neon Goby, Banggai Cardinalfish. Use the checker above to match against your own tank size.

What fish should you avoid keeping with a green chromis?

No outright no-gos in our current database, but always avoid fish that are much larger, much more aggressive, or that need very different water.

How big a tank do green chromis tank mates need?

Start from Green Chromis's own minimum and scale up with every addition. The checker above defaults to a 110 L community tank and flags pairings that need more room — drag the slider to match your setup.

← Back to the full Green Chromis care guide