True Red Terror Cichlid Tank Mates
True Red Terror Cichlid is aggressive, so its tank mates need choosing with care. Here are the 9 freshwater species that pair well with a true red terror cichlid — plus the 276 to avoid — with a live checker you can tune to your own tank.
The best tank mates for a true red terror cichlid
- Spotted Talking Catfish ✅ CompatibleEasy care · Peaceful · 15 cm · 22–26 °C (72–79 °F)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.
- Weather Loach ✅ CompatibleEasy care · Peaceful · 25 cm · 5–24 °C (41–75 °F)Compatible on the things that matter: shared water near 22–24 °C, workable temperaments, and no predator-and-prey size gap.
- Snowball Pleco ✅ CompatibleMedium 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.
- Clown Loach ✅ CompatibleMedium care · Peaceful · 30 cm · 25–30 °C (77–86 °F)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-spotted Pleco ✅ CompatibleMedium care · Peaceful · 35 cm · 24–27 °C (75–81 °F)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.
- Common Pleco ✅ CompatibleMedium care · Peaceful · 45 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.
- Sailfin Pleco ✅ CompatibleMedium care · Peaceful · 50 cm · 22–28 °C (72–82 °F)Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Elephant-nose Knifefish ✅ CompatibleHard care · Peaceful · 35 cm · 24–29 °C (75–84 °F)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.
- Black Doras Catfish ✅ CompatibleHard care · Peaceful · 60 cm · 22–28 °C (72–82 °F)Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
True Red Terror Cichlid tank mates that can work with care
- Adolf's Cory ⚠️ With cautionMedium care · Peaceful · 5.5 cm · 22–26 °C (72–79 °F)True Red Terror Cichlid may bully the smaller Adolf's Cory, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Agassiz's Corydoras ⚠️ With cautionEasy care · Peaceful · 6 cm · 22–28 °C (72–82 °F)True Red Terror Cichlid may bully the smaller Agassiz's Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Assassin Snail ⚠️ With cautionEasy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)True Red Terror Cichlid may bully the smaller Assassin Snail, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Axelrod's Cory ⚠️ With cautionEasy care · Peaceful · 5 cm · 23–28 °C (73–82 °F)True Red Terror Cichlid may bully the smaller Axelrod's Cory, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Bandit Corydoras ⚠️ With cautionEasy care · Peaceful · 5 cm · 22–27 °C (72–81 °F)True Red Terror Cichlid may bully the smaller Bandit Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Banjo Catfish ⚠️ With cautionMedium care · Peaceful · 15 cm · 20–26 °C (68–79 °F)Watch for True Red Terror Cichlid picking off any banjo catfish small enough to fit in its mouth.
- Bearded Corydoras ⚠️ With cautionMedium care · Peaceful · 10 cm · 18–24 °C (64–75 °F)True Red Terror Cichlid may bully the smaller Bearded Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Blood Red Tiger Pleco ⚠️ With cautionMedium care · Peaceful · 6 cm · 24–29 °C (75–84 °F)True Red Terror Cichlid may bully the smaller Blood Red Tiger Pleco, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
+ 47 more “with caution” pairings — see the interactive checker above.
Fish to avoid keeping with a true red terror cichlid
- Mekong Giant Catfish ⛔ AvoidHard care · Semi-aggressive · 300 cm · 20–28 °C (68–82 °F)True Red Terror Cichlid and Mekong Giant Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Wels Catfish ⛔ AvoidHard care · Aggressive · 300 cm · 15–25 °C (59–77 °F)True Red Terror Cichlid and Wels Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Alligator Gar ⛔ AvoidHard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)True Red Terror Cichlid and Alligator Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Redtail Catfish ⛔ AvoidHard care · Aggressive · 120 cm · 24–27 °C (75–81 °F)True Red Terror Cichlid and Redtail Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Fire Eel ⛔ AvoidMedium care · Semi-aggressive · 100 cm · 24–28 °C (75–82 °F)Two assertive fish, one genuinely aggressive: True Red Terror Cichlid and Fire Eel will hold territory and clash.
- Clown Knifefish ⛔ AvoidHard care · Aggressive · 90 cm · 24–28 °C (75–82 °F)Two assertive fish, one genuinely aggressive: True Red Terror Cichlid and Clown Knifefish will hold territory and clash.
- Spotted Gar ⛔ AvoidHard care · Aggressive · 90 cm · 18–26 °C (64–79 °F)True Red Terror Cichlid and Spotted Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Wolf Cichlid ⛔ AvoidHard care · Aggressive · 72 cm · 24–30 °C (75–86 °F)Two assertive fish, one genuinely aggressive: True Red Terror Cichlid and Wolf Cichlid will hold territory and clash.
+ 268 more to avoid — the checker above flags every one.
Check any fish against a true red terror cichlid
Dial in your exact tank size and filter by result — the checker scores every species in our database against a true red terror cichlid, with the reasoning for each verdict.
Tank-mate checker
Will it live with a True Red Terror Cichlid?
We compare each fish against your true red terror cichlid on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Black Doras Catfish✅ CompatiblePeaceful · 60 cm · Hard care · 22–28 °C (72–82 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Clown Loach✅ CompatiblePeaceful · 30 cm · Medium care · 25–30 °C (77–86 °F)
- 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.
- Common Pleco✅ CompatiblePeaceful · 45 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.
- Elephant-nose Knifefish✅ CompatiblePeaceful · 35 cm · Hard care · 24–29 °C (75–84 °F)
- 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.
- Sailfin Pleco✅ CompatiblePeaceful · 50 cm · Medium care · 22–28 °C (72–82 °F)
- Aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Snowball Pleco✅ CompatiblePeaceful · 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.
- Spotted Talking Catfish✅ CompatiblePeaceful · 15 cm · Easy care · 22–26 °C (72–79 °F)
- 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.
- Weather Loach✅ CompatiblePeaceful · 25 cm · Easy care · 5–24 °C (41–75 °F)
- Compatible on the things that matter: shared water near 22–24 °C, workable temperaments, and no predator-and-prey size gap.
- Yellow-spotted Pleco✅ CompatiblePeaceful · 35 cm · Medium care · 24–27 °C (75–81 °F)
- 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⚠️ With cautionPeaceful · 15 cm · Medium care · 20–26 °C (68–79 °F)
- Watch for True Red Terror Cichlid picking off any banjo catfish small enough to fit in its mouth.
- Bearded Corydoras⚠️ With cautionPeaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
- True Red Terror Cichlid may bully the smaller Bearded Corydoras, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Keep Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Bristlenose Pleco⚠️ With cautionPeaceful · 12 cm · Easy care · 23–30 °C (73–86 °F)
- True Red Terror Cichlid may bully the smaller Bristlenose Pleco, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Denison Barb⚠️ With cautionPeaceful · 15 cm · Medium care · 18–25 °C (64–77 °F)
- True Red Terror Cichlid is aggressive and may chase or nip the smaller Denison Barb — plant heavily and break up sight lines.
- Denison Barb is small enough to tempt True Red Terror Cichlid; only risk it in a densely planted setup with hiding spots.
- Keep Denison Barb in a shoal of 6+ or it gets stressed and nippy.
- Discus⚠️ With cautionPeaceful · 20 cm · Hard care · 28–31 °C (82–88 °F)
- Expect True Red Terror Cichlid to harass Discus at times; give dense cover and watch them at feeding.
- True Red Terror Cichlid may hunt Discus, fry or shrimplets — safest in a heavily planted tank.
- Keep Discus in a shoal of 6+ or it gets stressed and nippy.
- Giant Glass Catfish⚠️ With cautionPeaceful · 15 cm · Medium care · 22–27 °C (72–81 °F)
- True Red Terror Cichlid is aggressive and may chase or nip the smaller Giant Glass Catfish — plant heavily and break up sight lines.
- Goldfish⚠️ With cautionPeaceful · 30 cm · Medium care · 18–22 °C (64–72 °F)
- Expect True Red Terror Cichlid to harass Goldfish at times; give dense cover and watch them at feeding.
- Koi⚠️ With cautionPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- True Red Terror Cichlid is small enough to tempt Koi; only risk it in a densely planted setup with hiding spots.
- Your 570 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
- Marbled Hoplo⚠️ With cautionPeaceful · 14 cm · Easy care · 22–28 °C (72–82 °F)
- True Red Terror Cichlid may bully the smaller Marbled Hoplo, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Medusa Pleco⚠️ With cautionPeaceful · 12 cm · Medium care · 26–30 °C (79–86 °F)
- True Red Terror Cichlid may bully the smaller Medusa Pleco, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Moonlight Gourami⚠️ With cautionPeaceful · 15 cm · Easy care · 25–30 °C (77–86 °F)
- Expect True Red Terror Cichlid to harass Moonlight Gourami at times; give dense cover and watch them at feeding.
- True Red Terror Cichlid may hunt Moonlight Gourami, fry or shrimplets — safest in a heavily planted tank.
- Porthole Catfish⚠️ With cautionPeaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
- True Red Terror Cichlid may bully the smaller Porthole Catfish, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Rubber Lip Pleco⚠️ With cautionPeaceful · 12 cm · Easy care · 20–26 °C (68–79 °F)
- True Red Terror Cichlid may bully the smaller Rubber Lip Pleco, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Spotted Rubbernose Pleco⚠️ With cautionPeaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
- True Red Terror Cichlid may bully the smaller Spotted Rubbernose Pleco, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Upside-down Catfish⚠️ With cautionPeaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
- True Red Terror Cichlid may bully the smaller Upside-down Catfish, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Zebra Pleco⚠️ With cautionPeaceful · 10 cm · Hard care · 26–30 °C (79–86 °F)
- True Red Terror Cichlid may bully the smaller Zebra Pleco, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Alligator Gar⛔ Not recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- True Red Terror Cichlid and Alligator Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- True Red Terror Cichlid is bite-sized to a 250 cm predatory alligator gar — it will be eaten.
- Your 570 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
- Clown Knifefish⛔ Not recommendedAggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
- Two assertive fish, one genuinely aggressive: True Red Terror Cichlid and Clown Knifefish will hold territory and clash.
- Size gap is too large (90 vs 35 cm): Clown Knifefish will treat True Red Terror Cichlid as food.
- Your 570 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
- Fire Eel⛔ Not recommendedSemi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
- Two assertive fish, one genuinely aggressive: True Red Terror Cichlid and Fire Eel will hold territory and clash.
- Size gap is too large (100 vs 35 cm): Fire Eel will treat True Red Terror Cichlid as food.
- Mekong Giant Catfish⛔ Not recommendedSemi-aggressive · 300 cm · Hard care · 20–28 °C (68–82 °F)
- True Red Terror Cichlid and Mekong Giant Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Your 570 L tank is below the ~100000 L this pairing really wants — crowding raises aggression.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- True Red Terror Cichlid and Redtail Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Redtail Catfish (120 cm) is big enough to swallow the 35 cm True Red Terror Cichlid whole.
- Your 570 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
- Spotted Gar⛔ Not recommendedAggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
- True Red Terror Cichlid and Spotted Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Size gap is too large (90 vs 35 cm): Spotted Gar will treat True Red Terror Cichlid as food.
- Your 570 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
- Wels Catfish⛔ Not recommendedAggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
- True Red Terror Cichlid and Wels Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- True Red Terror Cichlid is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
- Your 570 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
- Wolf Cichlid⛔ Not recommendedAggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
- Two assertive fish, one genuinely aggressive: True Red Terror Cichlid and Wolf Cichlid will hold territory and clash.
- Wolf Cichlid may hunt True Red Terror Cichlid, fry or shrimplets — safest in a heavily planted tank.
- Your 570 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 true red terror cichlid community tank
Give the group a stable, planted 570 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 true red terror cichlid
True Red Terror Cichlid is aggressive and territorial, so most community fish are unsafe; any tank mate must be large, tough and able to hold its own. It mostly occupies the middle of the tank, so it pairs naturally with species that use the other levels.
True Red Terror Cichlid grows to about 35 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 18 cm. Match its water, too: aim for 22–28 °C (72–82 °F), pH 6–8 and 5–20 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.
True Red Terror Cichlid 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 true red terror cichlid live with other fish?
Yes — with the right companions. Our checker finds 9 compatible freshwater species for true red terror cichlid. 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 true red terror cichlid?
Easy, peaceful, similarly-sized species top the list — for example Spotted Talking Catfish, Weather Loach, Snowball Pleco. Use the checker above to match against your own tank size.
What fish should you avoid keeping with a true red terror cichlid?
Avoid Mekong Giant Catfish, Wels Catfish, Alligator Gar and similar — usually a temperature, size or temperament clash. The full "avoid" list below gives the reason for each.
How big a tank do true red terror cichlid tank mates need?
Start from True Red Terror Cichlid's own minimum and scale up with every addition. The checker above defaults to a 570 L community tank and flags pairings that need more room — drag the slider to match your setup.