Blue Tang Tank Mates
Blue Tang is semi-aggressive, so its tank mates need choosing with care. Here are the 24 freshwater species that pair well with a blue tang — plus the 2 to avoid — with a live checker you can tune to your own tank.
The best tank mates for a blue tang
- Clown Goby ✅ CompatibleEasy care · Peaceful · 4 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.
- Neon Goby ✅ CompatibleEasy care · Peaceful · 5 cm · 24–27 °C (75–81 °F)Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Banggai Cardinalfish ✅ CompatibleEasy 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.
- Blue Damselfish ✅ CompatibleEasy care · Semi-aggressive · 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.
- Firefish ✅ CompatibleEasy 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.
- Green Chromis ✅ CompatibleEasy care · Peaceful · 8 cm · 24–27 °C (75–81 °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.
- Ocellaris Clownfish ✅ CompatibleEasy care · Semi-aggressive · 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.
- Percula Clownfish ✅ CompatibleEasy care · Semi-aggressive · 8 cm · 24–27 °C (75–81 °F)Semi-aggressive + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Royal Gramma ✅ CompatibleEasy care · Peaceful · 8 cm · 24–27 °C (75–81 °F)Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Six Line Wrasse ✅ CompatibleEasy care · Semi-aggressive · 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.
- Yellow Watchman Goby ✅ CompatibleEasy care · Peaceful · 9 cm · 24–27 °C (75–81 °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.
- Bicolor Blenny ✅ CompatibleEasy 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.
- Coral Beauty Angelfish ✅ CompatibleEasy 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.
- Yellow Coris Wrasse ✅ CompatibleEasy care · Peaceful · 12 cm · 24–27 °C (75–81 °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.
- Lawnmower Blenny ✅ CompatibleEasy care · Peaceful · 13 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.
- Clarkii Clownfish ✅ CompatibleEasy care · Semi-aggressive · 14 cm · 24–27 °C (75–81 °F)Semi-aggressive + 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.
- Tomato Clownfish ✅ CompatibleEasy 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.
- Flame Angelfish ✅ CompatibleMedium care · Semi-aggressive · 10 cm · 24–27 °C (75–81 °F)Semi-aggressive + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Melanurus Wrasse ✅ CompatibleMedium care · Semi-aggressive · 12 cm · 24–27 °C (75–81 °F)Semi-aggressive + 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.
- Bicolor Angelfish ✅ CompatibleMedium care · Semi-aggressive · 15 cm · 24–27 °C (75–81 °F)Semi-aggressive + 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.
- Diamond Goby ✅ CompatibleMedium care · Peaceful · 15 cm · 24–27 °C (75–81 °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.
- Foxface Rabbitfish ✅ CompatibleMedium care · Semi-aggressive · 24 cm · 24–27 °C (75–81 °F)Semi-aggressive + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Mandarin Dragonet ✅ CompatibleHard care · Peaceful · 8 cm · 24–27 °C (75–81 °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.
- Cleaner Wrasse ✅ CompatibleHard care · Peaceful · 11 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.
Blue Tang tank mates that can work with care
- Emperor Angelfish ⚠️ With cautionHard care · Semi-aggressive · 38 cm · 24–27 °C (75–81 °F)Your 380 L tank is below the ~850 L this pairing really wants — crowding raises aggression.
- Kole Tang ⚠️ With cautionMedium care · Semi-aggressive · 18 cm · 24–27 °C (75–81 °F)Two tang (Blue Tang + Kole Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Naso Tang ⚠️ With cautionHard care · Semi-aggressive · 45 cm · 24–27 °C (75–81 °F)Two tang (Blue Tang + Naso Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Purple Tang ⚠️ With cautionMedium care · Semi-aggressive · 25 cm · 24–27 °C (75–81 °F)Two tang (Blue Tang + Purple Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Queen Angelfish ⚠️ With cautionHard care · Semi-aggressive · 45 cm · 24–27 °C (75–81 °F)Your 380 L tank is below the ~850 L this pairing really wants — crowding raises aggression.
- Regal Angelfish ⚠️ With cautionHard care · Semi-aggressive · 25 cm · 24–27 °C (75–81 °F)Your 380 L tank is below the ~480 L this pairing really wants — crowding raises aggression.
- Sailfin Tang ⚠️ With cautionMedium care · Semi-aggressive · 40 cm · 24–27 °C (75–81 °F)Two tang (Blue Tang + Sailfin Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Yellow Tang ⚠️ With cautionMedium care · Semi-aggressive · 20 cm · 24–27 °C (75–81 °F)Two tang (Blue Tang + Yellow Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
Fish to avoid keeping with a blue tang
- Maroon Clownfish ⛔ AvoidMedium care · Aggressive · 15 cm · 24–27 °C (75–81 °F)Two assertive fish, one genuinely aggressive: Blue Tang and Maroon Clownfish will hold territory and clash.
- Domino Damselfish ⛔ AvoidEasy care · Aggressive · 14 cm · 24–27 °C (75–81 °F)Blue Tang and Domino Damselfish are both territorial and at least one is outright aggressive — expect serious fighting.
Check any fish against a blue tang
Dial in your exact tank size and filter by result — the checker scores every species in our database against a blue tang, with the reasoning for each verdict.
Tank-mate checker
Will it live with a Blue Tang?
We compare each fish against your blue tang on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Banggai Cardinalfish✅ CompatiblePeaceful · 8 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.
- Bicolor Angelfish✅ CompatibleSemi-aggressive · 15 cm · Medium care · 24–27 °C (75–81 °F)
- Semi-aggressive + 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.
- Bicolor Blenny✅ CompatibleSemi-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.
- Blue Damselfish✅ CompatibleSemi-aggressive · 8 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.
- Clarkii Clownfish✅ CompatibleSemi-aggressive · 14 cm · Easy care · 24–27 °C (75–81 °F)
- Semi-aggressive + 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.
- Cleaner Wrasse✅ CompatiblePeaceful · 11 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.
- Clown Goby✅ CompatiblePeaceful · 4 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.
- Coral Beauty Angelfish✅ CompatibleSemi-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.
- Diamond Goby✅ CompatiblePeaceful · 15 cm · Medium care · 24–27 °C (75–81 °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.
- Firefish✅ CompatiblePeaceful · 8 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.
- Flame Angelfish✅ CompatibleSemi-aggressive · 10 cm · Medium care · 24–27 °C (75–81 °F)
- Semi-aggressive + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Foxface Rabbitfish✅ CompatibleSemi-aggressive · 24 cm · Medium care · 24–27 °C (75–81 °F)
- Semi-aggressive + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Green Chromis✅ CompatiblePeaceful · 8 cm · Easy care · 24–27 °C (75–81 °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 Green Chromis in a shoal of 6+ or it gets stressed and nippy.
- Lawnmower Blenny✅ CompatiblePeaceful · 13 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.
- Mandarin Dragonet✅ CompatiblePeaceful · 8 cm · Hard care · 24–27 °C (75–81 °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.
- Melanurus Wrasse✅ CompatibleSemi-aggressive · 12 cm · Medium care · 24–27 °C (75–81 °F)
- Semi-aggressive + 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.
- Neon Goby✅ CompatiblePeaceful · 5 cm · Easy care · 24–27 °C (75–81 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Ocellaris Clownfish✅ CompatibleSemi-aggressive · 8 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.
- Percula Clownfish✅ CompatibleSemi-aggressive · 8 cm · Easy care · 24–27 °C (75–81 °F)
- Semi-aggressive + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Royal Gramma✅ CompatiblePeaceful · 8 cm · Easy care · 24–27 °C (75–81 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
- Six Line Wrasse✅ CompatibleSemi-aggressive · 8 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.
- Tomato Clownfish✅ CompatibleSemi-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.
- Yellow Coris Wrasse✅ CompatiblePeaceful · 12 cm · Easy care · 24–27 °C (75–81 °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.
- Yellow Watchman Goby✅ CompatiblePeaceful · 9 cm · Easy care · 24–27 °C (75–81 °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.
- Emperor Angelfish⚠️ With cautionSemi-aggressive · 38 cm · Hard care · 24–27 °C (75–81 °F)
- Your 380 L tank is below the ~850 L this pairing really wants — crowding raises aggression.
- Kole Tang⚠️ With cautionSemi-aggressive · 18 cm · Medium care · 24–27 °C (75–81 °F)
- Two tang (Blue Tang + Kole Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Naso Tang⚠️ With cautionSemi-aggressive · 45 cm · Hard care · 24–27 °C (75–81 °F)
- Two tang (Blue Tang + Naso Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Your 380 L tank is below the ~680 L this pairing really wants — crowding raises aggression.
- Purple Tang⚠️ With cautionSemi-aggressive · 25 cm · Medium care · 24–27 °C (75–81 °F)
- Two tang (Blue Tang + Purple Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Queen Angelfish⚠️ With cautionSemi-aggressive · 45 cm · Hard care · 24–27 °C (75–81 °F)
- Your 380 L tank is below the ~850 L this pairing really wants — crowding raises aggression.
- Regal Angelfish⚠️ With cautionSemi-aggressive · 25 cm · Hard care · 24–27 °C (75–81 °F)
- Your 380 L tank is below the ~480 L this pairing really wants — crowding raises aggression.
- Sailfin Tang⚠️ With cautionSemi-aggressive · 40 cm · Medium care · 24–27 °C (75–81 °F)
- Two tang (Blue Tang + Sailfin Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Your 380 L tank is below the ~570 L this pairing really wants — crowding raises aggression.
- Yellow Tang⚠️ With cautionSemi-aggressive · 20 cm · Medium care · 24–27 °C (75–81 °F)
- Two tang (Blue Tang + Yellow Tang) will likely battle over territory — keep one per tank, or only in a large system with both added together.
- Domino Damselfish⛔ Not recommendedAggressive · 14 cm · Easy care · 24–27 °C (75–81 °F)
- Blue Tang and Domino Damselfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Maroon Clownfish⛔ Not recommendedAggressive · 15 cm · Medium care · 24–27 °C (75–81 °F)
- Two assertive fish, one genuinely aggressive: Blue Tang and Maroon Clownfish will hold territory and clash.
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 blue tang community tank
Give the group a stable, planted 380 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 blue tang
Being semi-aggressive, blue tang can nip or harass smaller, slower or long-finned fish — give it space, broken sight-lines and similarly robust companions. It ranges across the whole water column, so tank mates that keep to one level help reduce friction.
Blue Tang grows to about 30 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 15 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.
Blue Tang 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 blue tang live with other fish?
Yes — with the right companions. Our checker finds 24 compatible freshwater species for blue tang. 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 blue tang?
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 blue tang?
Avoid Maroon Clownfish, Domino Damselfish and similar — usually a temperature, size or temperament clash. The full "avoid" list below gives the reason for each.
How big a tank do blue tang tank mates need?
Start from Blue Tang's own minimum and scale up with every addition. The checker above defaults to a 380 L community tank and flags pairings that need more room — drag the slider to match your setup.