Mekong Giant Catfish Tank Mates
Mekong Giant Catfish is semi-aggressive, so its tank mates need choosing with care. Here are the 71 freshwater species that pair well with a mekong giant catfish — plus the 49 to avoid — with a live checker you can tune to your own tank.
The best tank mates for a mekong giant catfish
- Red Lip Nerite Snail ✅ CompatibleEasy 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.
- Assassin Snail ✅ CompatibleEasy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Cherry Shrimp ✅ CompatibleEasy care · Peaceful · 3 cm · 18–28 °C (64–82 °F)Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 20–28 °C — no size, zone or temperament conflicts.
- Malaysian Trumpet Snail ✅ CompatibleEasy care · Peaceful · 3 cm · 21–27 °C (70–81 °F)Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 21–27 °C — no size, zone or temperament conflicts.
- Ghost Shrimp ✅ CompatibleEasy care · Peaceful · 4 cm · 18–28 °C (64–82 °F)Compatible on the things that matter: shared water near 20–28 °C, workable temperaments, and no predator-and-prey size gap.
- Amano Shrimp ✅ CompatibleEasy care · Peaceful · 5 cm · 18–28 °C (64–82 °F)Compatible on the things that matter: shared water near 20–28 °C, workable temperaments, and no predator-and-prey size gap.
- Axelrod's Cory ✅ CompatibleEasy care · Peaceful · 5 cm · 23–28 °C (73–82 °F)Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
- Bandit Corydoras ✅ CompatibleEasy care · Peaceful · 5 cm · 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.
- Japanese Trapdoor Snail ✅ CompatibleEasy care · Peaceful · 5 cm · 10–28 °C (50–82 °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.
- Julii Corydoras ✅ CompatibleEasy care · Peaceful · 5 cm · 23–26 °C (73–79 °F)Compatible on the things that matter: shared water near 23–26 °C, workable temperaments, and no predator-and-prey size gap.
- Masked Corydoras ✅ CompatibleEasy care · Peaceful · 5 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.
- Skunk Corydoras ✅ CompatibleEasy care · Peaceful · 5 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.
- Rust Corydoras ✅ CompatibleEasy care · Peaceful · 5.5 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.
- Agassiz's Corydoras ✅ CompatibleEasy care · Peaceful · 6 cm · 22–28 °C (72–82 °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.
- Elegant Cory ✅ CompatibleEasy care · Peaceful · 6 cm · 22–28 °C (72–82 °F)Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- False Julii Corydoras ✅ CompatibleEasy care · Peaceful · 6 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.
- Corydoras Catfish ✅ CompatibleEasy care · Peaceful · 6.5 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.
- Spotfin Corydoras ✅ CompatibleEasy care · Peaceful · 6.5 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.
- Peppered Corydoras ✅ CompatibleEasy care · Peaceful · 7 cm · 18–26 °C (64–79 °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.
- Spotted Corydoras ✅ CompatibleEasy care · Peaceful · 7 cm · 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.
- Black Kuhli Loach ✅ CompatibleEasy care · Peaceful · 8 cm · 23–28 °C (73–82 °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.
- Burmese Loach ✅ CompatibleEasy care · Peaceful · 9 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.
- Kuhli Loach ✅ CompatibleEasy care · Peaceful · 10 cm · 24–30 °C (75–86 °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.
- Porthole Catfish ✅ CompatibleEasy care · Peaceful · 10 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.
Mekong Giant Catfish tank mates that can work with care
- Afra Cichlid ⚠️ With cautionMedium care · Semi-aggressive · 10 cm · 24–28 °C (75–82 °F)pH preferences only just meet (Mekong Giant Catfish 6.5–7.5 vs Afra Cichlid 7.8–8.6) — target the overlap and acclimate slowly.
- African Butterfly Cichlid ⚠️ With cautionMedium care · Semi-aggressive · 8 cm · 22–28 °C (72–82 °F)Mekong Giant Catfish and African Butterfly Cichlid can both be territorial; doable with space and dense planting, but watch for chasing.
- Agassiz's Dwarf Cichlid ⚠️ With cautionMedium care · Semi-aggressive · 9 cm · 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.
- Altifrons Geophagus ⚠️ With cautionMedium care · Semi-aggressive · 25 cm · 24–28 °C (75–82 °F)Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
- Amapá Tetra ⚠️ With cautionMedium care · Peaceful · 4 cm · 24–27 °C (75–81 °F)Expect Mekong Giant Catfish to harass Amapá Tetra at times; give dense cover and watch them at feeding.
- Amazon Puffer ⚠️ With cautionMedium care · Peaceful · 8 cm · 23–28 °C (73–82 °F)Mekong Giant Catfish clearly outsizes Amazon Puffer and is semi-aggressive; risky unless the tank is big and well-planted.
- Angelfish ⚠️ With cautionMedium care · Semi-aggressive · 15 cm · 24–30 °C (75–86 °F)Mekong Giant Catfish and Angelfish can both be territorial; doable with space and dense planting, but watch for chasing.
- Angelicus Synodontis ⚠️ With cautionMedium care · Semi-aggressive · 25 cm · 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.
+ 212 more “with caution” pairings — see the interactive checker above.
Fish to avoid keeping with a mekong giant catfish
- Wels Catfish ⛔ AvoidHard care · Aggressive · 300 cm · 15–25 °C (59–77 °F)Mekong Giant Catfish 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)Mekong Giant Catfish 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)Mekong Giant Catfish and Redtail Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Clown Knifefish ⛔ AvoidHard care · Aggressive · 90 cm · 24–28 °C (75–82 °F)Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Clown Knifefish will hold territory and clash.
- Spotted Gar ⛔ AvoidHard care · Aggressive · 90 cm · 18–26 °C (64–79 °F)Mekong Giant Catfish 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: Mekong Giant Catfish and Wolf Cichlid will hold territory and clash.
- Ocellaris Peacock Bass ⛔ AvoidHard care · Aggressive · 70 cm · 24–30 °C (75–86 °F)Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Ocellaris Peacock Bass will hold territory and clash.
- Mbu Puffer ⛔ AvoidHard care · Aggressive · 67 cm · 24–28 °C (75–82 °F)Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Mbu Puffer will hold territory and clash.
+ 41 more to avoid — the checker above flags every one.
Check any fish against a mekong giant catfish
Dial in your exact tank size and filter by result — the checker scores every species in our database against a mekong giant catfish, with the reasoning for each verdict.
Tank-mate checker
Will it live with a Mekong Giant Catfish?
We compare each fish against your mekong giant catfish on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Banjo Catfish✅ CompatiblePeaceful · 15 cm · Medium care · 20–26 °C (68–79 °F)
- Compatible on the things that matter: shared water near 20–26 °C, workable temperaments, and no predator-and-prey size gap.
- Bearded Corydoras✅ CompatiblePeaceful · 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.
- Black Doras Catfish✅ CompatiblePeaceful · 60 cm · Hard care · 22–28 °C (72–82 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Bristlenose Pleco✅ CompatiblePeaceful · 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.
- Burmese Loach✅ CompatiblePeaceful · 9 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.
- Clown Loach✅ CompatiblePeaceful · 30 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.
- Clown Pleco✅ CompatiblePeaceful · 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.
- Common Pleco✅ CompatiblePeaceful · 45 cm · Medium care · 22–28 °C (72–82 °F)
- Semi-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✅ CompatiblePeaceful · 35 cm · Hard care · 24–29 °C (75–84 °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✅ CompatiblePeaceful · 12 cm · Easy care · 24–30 °C (75–86 °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.
- Kuhli Loach✅ CompatiblePeaceful · 10 cm · Easy care · 24–30 °C (75–86 °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✅ CompatiblePeaceful · 14 cm · Easy care · 22–28 °C (72–82 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Medusa Pleco✅ CompatiblePeaceful · 12 cm · Medium 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.
- Porthole Catfish✅ CompatiblePeaceful · 10 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.
- Rubber Lip Pleco✅ CompatiblePeaceful · 12 cm · Easy care · 20–26 °C (68–79 °F)
- Compatible on the things that matter: shared water near 20–26 °C, workable temperaments, and no predator-and-prey size gap.
- Sailfin Pleco✅ CompatiblePeaceful · 50 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.
- Snowball Pleco✅ CompatiblePeaceful · 16 cm · Medium 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.
- Spotted Rubbernose Pleco✅ CompatiblePeaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
- Compatible on the things that matter: shared water near 20–26 °C, workable temperaments, and no predator-and-prey size gap.
- Spotted Talking Catfish✅ CompatiblePeaceful · 15 cm · Easy care · 22–26 °C (72–79 °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.
- Striped Eel Loach✅ CompatiblePeaceful · 12 cm · Medium 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.
- Upside-down Catfish✅ CompatiblePeaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
- Semi-aggressive + Peaceful, but with no direct clash here, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Weather Loach✅ CompatiblePeaceful · 25 cm · Easy care · 5–24 °C (41–75 °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.
- Yellow-spotted Pleco✅ CompatiblePeaceful · 35 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.
- Zebra Pleco✅ CompatiblePeaceful · 10 cm · Hard care · 26–30 °C (79–86 °F)
- Compatible on the things that matter: shared water near 26–28 °C, workable temperaments, and no predator-and-prey size gap.
- Bichir⚠️ With cautionSemi-aggressive · 45 cm · Medium care · 24–28 °C (75–82 °F)
- Mekong Giant Catfish and Bichir can both be territorial; doable with space and dense planting, but watch for chasing.
- Black Ghost Knifefish⚠️ With cautionSemi-aggressive · 45 cm · Hard care · 24–28 °C (75–82 °F)
- Mekong Giant Catfish and Black Ghost Knifefish can both be territorial; doable with space and dense planting, but watch for chasing.
- Butter Catfish⚠️ With cautionSemi-aggressive · 45 cm · Medium care · 24–28 °C (75–82 °F)
- Mekong Giant Catfish and Butter Catfish can both be territorial; doable with space and dense planting, but watch for chasing.
- Fire Eel⚠️ With cautionSemi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
- Mekong Giant Catfish and Fire Eel can both be territorial; doable with space and dense planting, but watch for chasing.
- Giant Gourami⚠️ With cautionSemi-aggressive · 70 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.
- Golden Sailfin Pleco⚠️ With cautionSemi-aggressive · 45 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.
- Goldfish⚠️ With cautionPeaceful · 30 cm · Medium care · 18–22 °C (64–72 °F)
- Expect Mekong Giant Catfish to harass Goldfish at times; give dense cover and watch them at feeding.
- Imperial Flower Loach⚠️ With cautionSemi-aggressive · 50 cm · Hard care · 15–22 °C (59–72 °F)
- Mekong Giant Catfish and Imperial Flower Loach can both be territorial; doable with space and dense planting, but watch for chasing.
- Koi⚠️ With cautionPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- Mekong Giant Catfish clearly outsizes Koi and is semi-aggressive; risky unless the tank is big and well-planted.
- Lima Shovelnose Catfish⚠️ With cautionSemi-aggressive · 50 cm · Hard care · 23–30 °C (73–86 °F)
- Mekong Giant Catfish and Lima Shovelnose Catfish can both be territorial; doable with space and dense planting, but watch for chasing.
- Lyre Tail Pleco⚠️ With cautionSemi-aggressive · 63 cm · Hard care · 21–27 °C (70–81 °F)
- Mekong Giant Catfish and Lyre Tail Pleco can both be territorial; doable with space and dense planting, but watch for chasing.
- Nile Bichir⚠️ With cautionSemi-aggressive · 70 cm · Medium care · 25–28 °C (77–82 °F)
- Both are a bit pushy (semi-aggressive + semi-aggressive) — workable only in a larger tank with cover and broken sight lines.
- Orinoco Sailfin Pleco⚠️ With cautionSemi-aggressive · 50 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.
- Royal Pleco⚠️ With cautionSemi-aggressive · 43 cm · Medium care · 23–28 °C (73–82 °F)
- Mekong Giant Catfish and Royal Pleco can both be territorial; doable with space and dense planting, but watch for chasing.
- Spotted Shovelnose Catfish⚠️ With cautionSemi-aggressive · 55 cm · Hard care · 22–28 °C (72–82 °F)
- Mekong Giant Catfish and Spotted Shovelnose Catfish can both be territorial; doable with space and dense planting, but watch for chasing.
- True Parrot Cichlid⚠️ With cautionSemi-aggressive · 33 cm · Hard care · 23–28 °C (73–82 °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 recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- Mekong Giant Catfish and Alligator Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Clown Knifefish⛔ Not recommendedAggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
- Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Clown Knifefish will hold territory and clash.
- Mbu Puffer⛔ Not recommendedAggressive · 67 cm · Hard care · 24–28 °C (75–82 °F)
- Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Mbu Puffer will hold territory and clash.
- Ocellaris Peacock Bass⛔ Not recommendedAggressive · 70 cm · Hard care · 24–30 °C (75–86 °F)
- Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Ocellaris Peacock Bass will hold territory and clash.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- Mekong Giant Catfish and Redtail Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Spotted Gar⛔ Not recommendedAggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
- Mekong Giant Catfish and Spotted Gar are both territorial and at least one is outright aggressive — expect serious fighting.
- Wels Catfish⛔ Not recommendedAggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
- Mekong Giant Catfish and Wels Catfish are both territorial and at least one is outright aggressive — expect serious fighting.
- Wolf Cichlid⛔ Not recommendedAggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
- Two assertive fish, one genuinely aggressive: Mekong Giant Catfish and Wolf Cichlid 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 mekong giant catfish community tank
Give the group a stable, planted 100000 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 mekong giant catfish
Being semi-aggressive, mekong giant catfish 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.
Mekong Giant Catfish grows to about 300 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 150 cm. Match its water, too: aim for 20–28 °C (68–82 °F), pH 6.5–7.5 and 2–30 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.
Mekong Giant Catfish 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 mekong giant catfish live with other fish?
Yes — with the right companions. Our checker finds 71 compatible freshwater species for mekong giant catfish. 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 mekong giant catfish?
Easy, peaceful, similarly-sized species top the list — for example Red Lip Nerite Snail, Assassin Snail, Cherry Shrimp. Use the checker above to match against your own tank size.
What fish should you avoid keeping with a mekong giant catfish?
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 mekong giant catfish tank mates need?
Start from Mekong Giant Catfish's own minimum and scale up with every addition. The checker above defaults to a 100000 L community tank and flags pairings that need more room — drag the slider to match your setup.