Porthole Catfish Tank Mates
Porthole Catfish is peaceful, so its tank mates need choosing with care. Here are the 187 freshwater species that pair well with a porthole catfish — plus the 0 to avoid — with a live checker you can tune to your own tank.
The best tank mates for a porthole catfish
- Ember Tetra ✅ CompatibleEasy care · Peaceful · 2 cm · 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.
- Neon Green Rasbora ✅ CompatibleEasy care · Peaceful · 2 cm · 22–26 °C (72–79 °F)Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Ramshorn Snail ✅ CompatibleEasy care · Peaceful · 2 cm · 20–28 °C (68–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Red Lip Nerite Snail ✅ CompatibleEasy care · Peaceful · 2 cm · 22–28 °C (72–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Dawn Tetra ✅ CompatibleEasy care · Peaceful · 2.5 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.
- Nerite Snail ✅ CompatibleEasy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Assassin Snail ✅ CompatibleEasy care · Peaceful · 3 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.
- Endler's Livebearer ✅ CompatibleEasy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Glowlight Danio ✅ CompatibleEasy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Gold Ring Danio ✅ CompatibleEasy care · Peaceful · 3 cm · 18–26 °C (64–79 °F)Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Malaysian Trumpet Snail ✅ CompatibleEasy care · Peaceful · 3 cm · 21–27 °C (70–81 °F)Both are peaceful, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Neon Tetra ✅ CompatibleEasy care · Peaceful · 3 cm · 20–26 °C (68–79 °F)Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Tail-spot Corydoras ✅ CompatibleEasy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Trinidad Guppy ✅ CompatibleEasy care · Peaceful · 3 cm · 19–24 °C (66–75 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Pygmy Corydoras ✅ CompatibleEasy care · Peaceful · 3.2 cm · 22–26 °C (72–79 °F)Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Glowlight Rasbora ✅ CompatibleEasy care · Peaceful · 3.5 cm · 23–28 °C (73–82 °F)Both are peaceful, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
- Blue Danio ✅ CompatibleEasy care · Peaceful · 4 cm · 21–26 °C (70–79 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Emperor Tetra ✅ CompatibleEasy care · Peaceful · 4 cm · 23–27 °C (73–81 °F)Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
- Flame Tetra ✅ CompatibleEasy care · Peaceful · 4 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.
- Glowlight Tetra ✅ CompatibleEasy care · Peaceful · 4 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.
- Golden Dwarf Barb ✅ CompatibleEasy care · Peaceful · 4 cm · 18–24 °C (64–75 °F)Both are peaceful, and their water overlaps around 22–24 °C — no size, zone or temperament conflicts.
- Phoenix Tetra ✅ CompatibleEasy care · Peaceful · 4 cm · 23–28 °C (73–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Red Phantom Tetra ✅ CompatibleEasy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Rosy Tetra ✅ CompatibleEasy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
Porthole 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 (Porthole Catfish 6–7.5 vs Afra Cichlid 7.8–8.6) — target the overlap and acclimate slowly.
- Alligator Gar ⚠️ With cautionHard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)Alligator Gar may bully the smaller Porthole Catfish, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Altifrons Geophagus ⚠️ With cautionMedium care · Semi-aggressive · 25 cm · 24–28 °C (75–82 °F)Altifrons Geophagus may bully the smaller Porthole Catfish, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Amano Shrimp ⚠️ With cautionEasy care · Peaceful · 5 cm · 18–28 °C (64–82 °F)Adult Amano Shrimp might survive with Porthole Catfish, but expect the young to be eaten — plant heavily.
- Amazon Puffer ⚠️ With cautionMedium care · Peaceful · 8 cm · 23–28 °C (73–82 °F)Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Angelfish ⚠️ With cautionMedium care · Semi-aggressive · 15 cm · 24–30 °C (75–86 °F)Your 80 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
- Angelicus Synodontis ⚠️ With cautionMedium care · Semi-aggressive · 25 cm · 23–27 °C (73–81 °F)Angelicus Synodontis may bully the smaller Porthole Catfish, though its armour makes it a hard meal — give it caves and driftwood to retreat into.
- Arrowhead Puffer ⚠️ With cautionHard care · Aggressive · 12 cm · 23–28 °C (73–82 °F)Your 80 L tank is below the ~132 L this pairing really wants — crowding raises aggression.
+ 145 more “with caution” pairings — see the interactive checker above.
Fish to avoid keeping with a porthole catfish
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.
Check any fish against a porthole catfish
Dial in your exact tank size and filter by result — the checker scores every species in our database against a porthole catfish, with the reasoning for each verdict.
Tank-mate checker
Will it live with a Porthole Catfish?
We compare each fish against your porthole catfish on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- African Butterfly Cichlid✅ CompatibleSemi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °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.
- Agassiz's Dwarf Cichlid✅ CompatibleSemi-aggressive · 9 cm · Medium care · 24–30 °C (75–86 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Banded Gourami✅ CompatibleSemi-aggressive · 12 cm · Easy care · 22–28 °C (72–82 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Bearded Corydoras✅ CompatiblePeaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
- Compatible on the things that matter: shared water near 22–24 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Keep Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Brilliant Rasbora✅ 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.
- Keep Brilliant Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Burmese Loach✅ CompatiblePeaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Clown Pleco✅ CompatiblePeaceful · 9 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.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Cockatoo Dwarf Cichlid✅ CompatibleSemi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Giant Betta✅ CompatiblePeaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Giant Kuhli Loach✅ CompatiblePeaceful · 12 cm · Easy care · 24–30 °C (75–86 °F)
- Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Golden Wonder Killifish✅ CompatibleSemi-aggressive · 10 cm · Easy care · 22–28 °C (72–82 °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.
- Keyhole Cichlid✅ CompatiblePeaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
- Kribensis✅ CompatibleSemi-aggressive · 10 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.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Kuhli Loach✅ CompatiblePeaceful · 10 cm · Easy care · 24–30 °C (75–86 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Leopard Frog Pleco✅ CompatiblePeaceful · 9 cm · Medium care · 25–30 °C (77–86 °F)
- Both are peaceful, and their water overlaps around 25–28 °C — no size, zone or temperament conflicts.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Molly✅ CompatiblePeaceful · 10 cm · Easy care · 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.
- Murray River Rainbowfish✅ CompatiblePeaceful · 11 cm · Easy care · 15–26 °C (59–79 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Keep Murray River Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Paradise Fish✅ CompatibleAggressive · 10 cm · Medium care · 16–26 °C (61–79 °F)
- Peaceful + Aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Rosy Barb✅ CompatibleSemi-aggressive · 10 cm · Easy care · 18–26 °C (64–79 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Keep Rosy Barb in a shoal of 6+ or it gets stressed and nippy.
- Spotted Rubbernose Pleco✅ CompatiblePeaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
- Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Thick-lipped Gourami✅ CompatiblePeaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Tiger Betta✅ CompatibleSemi-aggressive · 11 cm · Hard care · 22–27 °C (72–81 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–27 °C — no size, zone or temperament conflicts.
- Topaz Cichlid✅ CompatibleSemi-aggressive · 10 cm · Medium care · 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.
- 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.
- Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
- Afra Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
- pH preferences only just meet (Porthole Catfish 6–7.5 vs Afra Cichlid 7.8–8.6) — target the overlap and acclimate slowly.
- Your 80 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
- Keep Afra Cichlid in a shoal of 6+ or it gets stressed and nippy.
- Auratus Cichlid⚠️ With cautionAggressive · 11 cm · Medium care · 23–28 °C (73–82 °F)
- Different pH ranges (6–7.5 vs 7.6–8.8); doable if you sit in the shared band, but not ideal long-term.
- Your 80 L tank is below the ~190 L this pairing really wants — crowding raises aggression.
- Keep Auratus Cichlid in a shoal of 6+ or it gets stressed and nippy.
- Bandit Cichlid⚠️ With cautionSemi-aggressive · 9 cm · Medium care · 22–26 °C (72–79 °F)
- Your 80 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
- Keep Bandit Cichlid in a shoal of 6+ or it gets stressed and nippy.
- Boesemani Rainbowfish⚠️ With cautionPeaceful · 11 cm · Medium care · 24–28 °C (75–82 °F)
- Your 80 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
- Keep Boesemani Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Brichardi Cichlid⚠️ With cautionSemi-aggressive · 9 cm · Medium care · 24–28 °C (75–82 °F)
- pH preferences only just meet (Porthole Catfish 6–7.5 vs Brichardi Cichlid 7.8–9) — target the overlap and acclimate slowly.
- Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Clown Rasbora⚠️ With cautionPeaceful · 10 cm · Medium care · 23–28 °C (73–82 °F)
- Your 80 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
- Keep Clown Rasbora in a shoal of 6+ or it gets stressed and nippy.
- Convict Cichlid⚠️ With cautionAggressive · 10 cm · Easy care · 21–28 °C (70–82 °F)
- Your 80 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
- Daffodil Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 23–27 °C (73–81 °F)
- Different pH ranges (6–7.5 vs 7.8–9); doable if you sit in the shared band, but not ideal long-term.
- Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Demasoni Cichlid⚠️ With cautionAggressive · 9 cm · Hard care · 23–27 °C (73–81 °F)
- pH preferences only just meet (Porthole Catfish 6–7.5 vs Demasoni Cichlid 7.8–8.6) — target the overlap and acclimate slowly.
- Your 80 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
- Keep Demasoni Cichlid in a shoal of 12+ or it gets stressed and nippy.
- Electric Yellow Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 23–26 °C (73–79 °F)
- pH preferences only just meet (Porthole Catfish 6–7.5 vs Electric Yellow Cichlid 7.8–8.9) — target the overlap and acclimate slowly.
- Your 80 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
- Giant Danio⚠️ With cautionPeaceful · 10 cm · Easy care · 20–27 °C (68–81 °F)
- Your 80 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
- Keep Giant Danio in a shoal of 6+ or it gets stressed and nippy.
- Golden Vampire Pleco⚠️ With cautionSemi-aggressive · 11 cm · Medium care · 26–30 °C (79–86 °F)
- Your 80 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Johanni Cichlid⚠️ With cautionAggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
- Different pH ranges (6–7.5 vs 7.8–8.6); doable if you sit in the shared band, but not ideal long-term.
- Your 80 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
- Keep Johanni Cichlid in a shoal of 6+ or it gets stressed and nippy.
- Rusty Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
- Different pH ranges (6–7.5 vs 7.8–8.5); doable if you sit in the shared band, but not ideal long-term.
- Your 80 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
- Tanganyikan Butterfly Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Hard care · 24–28 °C (75–82 °F)
- Different pH ranges (6–7.5 vs 8–9); doable if you sit in the shared band, but not ideal long-term.
- Your 80 L tank is below the ~130 L this pairing really wants — crowding raises aggression.
- Upside-down Catfish⚠️ With cautionPeaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
- Your 80 L tank is below the ~115 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 porthole catfish community tank
Give the group a stable, planted 80 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 porthole catfish
As a peaceful species, porthole catfish is easily bullied — favour other calm, non-nippy fish and steer clear of boisterous or aggressive tank mates. It mostly occupies the bottom of the tank, so it pairs naturally with species that use the other levels.
Porthole Catfish grows to about 10 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 5 cm. Match its water, too: aim for 22–28 °C (72–82 °F), pH 6–7.5 and 2–15 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.
Porthole Catfish is a shoaling fish — stock a group of 4+ 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.
Frequently asked questions
Can a porthole catfish live with other fish?
Yes — with the right companions. Our checker finds 187 compatible freshwater species for porthole 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 porthole catfish?
Easy, peaceful, similarly-sized species top the list — for example Ember Tetra, Neon Green Rasbora, Ramshorn Snail. Use the checker above to match against your own tank size.
What fish should you avoid keeping with a porthole catfish?
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 porthole catfish tank mates need?
Start from Porthole Catfish's own minimum and scale up with every addition. The checker above defaults to a 80 L community tank and flags pairings that need more room — drag the slider to match your setup.