Photo: George Henry Ford (Public domain) — via Wikimedia Commons
Thick-lipped Gourami (Trichogaster labiosa)
A subtly gorgeous, bubble-nest builder that stays peaceful and handles a range of water conditions with ease.
Will it live with a Thick-lipped Gourami?
We compare each fish against your thick-lipped gourami on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.
- Badis✅ CompatibleSemi-aggressive · 8 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.
- Banded Dwarf Cichlid✅ CompatibleSemi-aggressive · 7 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.
- Black Kuhli Loach✅ CompatiblePeaceful · 8 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.
- Bolivian Ram✅ CompatiblePeaceful · 8 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.
- Brilliant Rasbora✅ 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- 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.
- Celebes Rainbowfish✅ CompatiblePeaceful · 7 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Celebes Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Cockatoo Dwarf Cichlid✅ CompatibleSemi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °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.
- Costa's Tetra✅ CompatiblePeaceful · 7 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Costa's Tetra in a shoal of 6+ or it gets stressed and nippy.
- Croaking Gourami✅ CompatiblePeaceful · 7 cm · Easy care · 24–28 °C (75–82 °F)
- Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Gold Barb✅ CompatiblePeaceful · 7.5 cm · Easy care · 18–26 °C (64–79 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Gold Barb in a shoal of 6+ or it gets stressed and nippy.
- Goldeneye Dwarf Cichlid✅ CompatibleSemi-aggressive · 8 cm · Easy 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.
- Hongsloi Dwarf Cichlid✅ CompatibleSemi-aggressive · 7 cm · Medium care · 24–29 °C (75–84 °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.
- Kuhli Loach✅ CompatiblePeaceful · 10 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.
- Leopard Frog Pleco✅ CompatiblePeaceful · 9 cm · Medium care · 25–30 °C (77–86 °F)
- Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
- Molly✅ CompatiblePeaceful · 10 cm · Easy care · 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- 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.
- Both favour the middle of the tank — offer enough cover so they aren't always in each other's space.
- Keep Murray River Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
- Peacock Gudgeon✅ CompatiblePeaceful · 7 cm · Medium 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 middle of the tank — offer enough cover so they aren't always in each other's space.
- Peppered Corydoras✅ CompatiblePeaceful · 7 cm · Easy care · 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.
- Keep Peppered Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Rio Negro Checkerboard Cichlid✅ CompatiblePeaceful · 7 cm · Hard care · 24–29 °C (75–84 °F)
- Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
- Splashing Tetra✅ CompatiblePeaceful · 8 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.
- Keep Splashing Tetra in a shoal of 6+ or it gets stressed and nippy.
- Spotted Corydoras✅ CompatiblePeaceful · 7 cm · Easy care · 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.
- Keep Spotted Corydoras in a shoal of 6+ or it gets stressed and nippy.
- Sumo Loach✅ CompatibleSemi-aggressive · 7 cm · Medium care · 22–26 °C (72–79 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Umbrella Dwarf Cichlid✅ CompatibleSemi-aggressive · 7 cm · Medium care · 20–26 °C (68–79 °F)
- Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
- Afra Cichlid⚠️ With cautionSemi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
- Different pH ranges (6.5–7.5 vs 7.8–8.6); doable if you sit in the shared band, but not ideal long-term.
- Expect Afra Cichlid to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 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.
- Agassiz's Dwarf Cichlid⚠️ With cautionSemi-aggressive · 9 cm · Medium care · 24–30 °C (75–86 °F)
- Agassiz's Dwarf Cichlid is semi-aggressive and may chase or nip the smaller Thick-lipped Gourami — plant heavily and break up sight lines.
- Bandit Cichlid⚠️ With cautionSemi-aggressive · 9 cm · Medium care · 22–26 °C (72–79 °F)
- Expect Bandit Cichlid to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 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.
- Bearded Corydoras⚠️ With cautionPeaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Keep Bearded Corydoras 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)
- Different pH ranges (6.5–7.5 vs 7.8–9); doable if you sit in the shared band, but not ideal long-term.
- Brichardi Cichlid and Thick-lipped Gourami are close in size, but the semi-aggressive one tends to dominate — add thick-lipped gourami in a group to spread the pressure.
- Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Clown Pleco⚠️ With cautionPeaceful · 9 cm · Medium care · 24–28 °C (75–82 °F)
- Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
- Clown Rasbora⚠️ With cautionPeaceful · 10 cm · Medium care · 23–28 °C (73–82 °F)
- Your 75 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)
- Expect Convict Cichlid to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 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)
- pH preferences only just meet (Thick-lipped Gourami 6.5–7.5 vs Daffodil Cichlid 7.8–9) — target the overlap and acclimate slowly.
- Daffodil Cichlid is semi-aggressive and may chase or nip the smaller Thick-lipped Gourami — plant heavily and break up sight lines.
- Your 75 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)
- Different pH ranges (6.5–7.5 vs 7.8–8.6); doable if you sit in the shared band, but not ideal long-term.
- Demasoni Cichlid is aggressive and may chase or nip the smaller Thick-lipped Gourami — plant heavily and break up sight lines.
- Your 75 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)
- Different pH ranges (6.5–7.5 vs 7.8–8.9); doable if you sit in the shared band, but not ideal long-term.
- Expect Electric Yellow Cichlid to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 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 75 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.
- Lifalili Jewel Cichlid⚠️ With cautionAggressive · 9 cm · Medium care · 22–28 °C (72–82 °F)
- Expect Lifalili Jewel Cichlid to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
- Mexican Tetra⚠️ With cautionSemi-aggressive · 9 cm · Easy care · 18–25 °C (64–77 °F)
- Expect Mexican Tetra to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
- Keep Mexican Tetra in a shoal of 6+ or it gets stressed and nippy.
- Silver Tetra⚠️ With cautionPeaceful · 9 cm · Easy care · 24–28 °C (75–82 °F)
- Your 75 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
- Keep Silver Tetra in a shoal of 6+ or it gets stressed and nippy.
- Zebra Loach⚠️ With cautionPeaceful · 9 cm · Medium care · 23–26 °C (73–79 °F)
- Your 75 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
- Alligator Gar⛔ Not recommendedAggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
- Thick-lipped Gourami is bite-sized to a 250 cm predatory alligator gar — it will be eaten.
- Alligator Gar clearly outsizes Thick-lipped Gourami and is aggressive; risky unless the tank is big and well-planted.
- Your 75 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)
- Clown Knifefish (90 cm) is big enough to swallow the 9 cm Thick-lipped Gourami whole.
- Clown Knifefish clearly outsizes Thick-lipped Gourami and is aggressive; risky unless the tank is big and well-planted.
- Your 75 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)
- Thick-lipped Gourami is bite-sized to a 100 cm predatory fire eel — it will be eaten.
- Expect Fire Eel to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
- Koi⛔ Not recommendedPeaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
- Thick-lipped Gourami is bite-sized to a 90 cm koi — it will be eaten.
- Your 75 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
- Redtail Catfish⛔ Not recommendedAggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
- Redtail Catfish (120 cm) is big enough to swallow the 9 cm Thick-lipped Gourami whole.
- Redtail Catfish is aggressive and may chase or nip the smaller Thick-lipped Gourami — plant heavily and break up sight lines.
- Your 75 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)
- Size gap is too large (90 vs 9 cm): Spotted Gar will treat Thick-lipped Gourami as food.
- Spotted Gar is aggressive and may chase or nip the smaller Thick-lipped Gourami — plant heavily and break up sight lines.
- Your 75 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)
- Thick-lipped Gourami is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
- Wels Catfish is aggressive and may chase or nip the smaller Thick-lipped Gourami — plant heavily and break up sight lines.
- Your 75 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)
- Thick-lipped Gourami is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.
- Expect Wolf Cichlid to harass Thick-lipped Gourami at times; give dense cover and watch them at feeding.
- Your 75 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.
Thick-lipped Gourami care specs
- Care level
- Easy
- Breeding
- Easy
- Max size
- 9 cm (3.5 in)
- Min tank size
- 60 L (15.9 gal)
- Temperature
- 22–28 °C (72–82 °F)
- pH
- 6.5–7.5
- Hardness
- 4–15 dGH
- Lifespan
- 3–5 years
- Diet
- Omnivore
- Swim level
- Middle
- Group size
- Best alone or in a pair
- Family
- Osphronemidae
- Origin
- Myanmar (Burma) — slow-moving lowland rivers and ponds
What is a Thick-lipped Gourami?
The thick-lipped gourami (Trichogaster labiosa) is a labyrinth fish from the slow, weedy lowland waters of Myanmar (Burma). It belongs to the family Osphronemidae — the same family as bettas and pearl gouramis — and shares their defining trait: a labyrinth organ that lets the fish breathe atmospheric air directly from the surface. That adaptation evolved for warm, oxygen-poor waters and makes the species genuinely tough by aquarium standards.
The common name comes from the fish’s distinctively fleshy, thickened lips, an adaptation for probing leaf litter, biofilm and plant stems in search of small invertebrates. Colouration is restrained rather than flashy: an olive-brown base overlaid with a blue-green iridescent sheen that shifts with angle and light. Breeding males develop a warm orange-red flush across the throat, belly and unpaired fins that can be surprisingly striking in a planted tank. Females remain plainer, and both sexes grow to around 9 cm (3.5 in).
This species is often passed over in favour of more vividly coloured relatives, but experienced fishkeepers know it as one of the more reliable, low-drama gouramis available — peaceful, adaptable, and rewarding to watch once settled in.
Where does the Thick-lipped Gourami come from?
In the wild, thick-lipped gouramis inhabit slow-moving lowland rivers, irrigation channels, rice paddies and ponds throughout Myanmar. These habitats share certain characteristics: warm, shallow, heavily vegetated water with a soft or muddy substrate, low flow, and water chemistry that ranges from slightly soft and acidic to near-neutral.
Understanding this origin shapes good care decisions. The fish expect cover from dense aquatic and marginal plants, minimal current, warm temperatures and a fairly stable, near-neutral pH. They are not fish of cool, fast-flowing streams, and they do not belong in a tank with a powerful powerhead or canister-filter return aimed at the surface.
What size tank does a Thick-lipped Gourami need, and how should it be set up?
A 60 L (16 gal) aquarium is the practical minimum for a single fish or a pair, and 80–100 L (21–26 gal) gives noticeably more flexibility for a small community. The tank should be longer than tall — a footprint that provides horizontal swimming space and a reasonable surface area.
Replicating the natural habitat means:
- Dense planting along the sides and back (Amazon swords, vallisneria, cryptocorynes, floating hornwort) to provide cover and dim the light slightly.
- Open midwater swimming space in the centre front.
- Floating plants (frogbit, water lettuce) to diffuse surface light and anchor bubble nests.
- A soft or sand substrate is not mandatory but suits the species well.
- Gentle filtration — a sponge filter or a canister return turned to trickle along the glass is ideal. Strong flow stresses labyrinth fish and disrupts bubble nests. Aim for a turnover rate of 3–5× the tank volume per hour, directed away from the surface.
- A tight-fitting lid with a small air gap of humid air underneath. This matters because cold, dry air drawn into the labyrinth organ can injure the fish.
What water parameters does the Thick-lipped Gourami need?
- Temperature: 22–28 °C (72–82 °F). The species tolerates the lower end of this range better than many gouramis, which makes it slightly more forgiving in rooms without a heater, but a reliable heater is still strongly recommended for stability.
- pH: 6.5–7.5 — near-neutral suits it well.
- Hardness: 4–15 dGH, soft to moderately hard.
As with all labyrinth fish, stability is more important than hitting precise targets. A well-cycled tank, weekly partial water changes of around 25–30%, and avoiding sudden temperature swings will keep the fish in good health far better than chasing any single number. Dechlorinate tap water before adding it.
What do Thick-lipped Gouramis eat?
Thick-lipped gouramis are omnivores that eat a wide range of foods, making feeding uncomplicated. A good routine:
- Staple: quality small-pellet or flake food formulated for omnivores or tropical fish, offered once or twice daily in amounts eaten within two to three minutes.
- Enrichment: frozen or live bloodworms, daphnia, and brine shrimp two to three times per week. The fleshy lips are well adapted to picking at small invertebrates, and live or frozen food promotes natural foraging behaviour and brings out male colouration.
- Plant matter: they will graze on algae and accept blanched spinach or spirulina-based foods; this makes up a smaller portion of the diet but is beneficial.
Feed small amounts and remove uneaten food promptly to keep water quality high. Overfeeding is one of the most common causes of water fouling in smaller tanks.
How do Thick-lipped Gouramis behave, and what are good tank mates?
The thick-lipped gourami is peaceful and well-suited to a community aquarium of similarly sized, calm species. It spends most of its time in the middle zone of the water column, occasionally venturing to the surface to breathe or inspect a floating plant stem.
Males may display toward one another — spreading fins, flaring slightly — but outright fighting is uncommon if each fish has adequate space and line-of-sight breaks from plants. The safest arrangement is one male with one or two females. Two males can coexist in a 100 L+ tank with heavy planting, but watch for persistent harassment.
Suitable tank mates include small to medium tetras (rummy-nose, ember, harlequin rasboras), corydoras catfish, kuhli loaches, peaceful dwarf cichlids (apistogramma, German blue rams in warmer setups), and most peaceful livebearers. Avoid fin-nipping species (tiger barbs, serpae tetras) that target the long threadlike ventral feelers, and avoid other large or boisterous gourami males. Large, predatory fish are obviously incompatible.
For a full list of tested pairings, see Thick-lipped Gourami tank mates.
How do you tell male from female Thick-lipped Gouramis apart?
Sexing adult thick-lipped gouramis is reasonably straightforward:
- Males develop a pronounced orange-red flush across the throat, belly and lower fins during maturity, especially when in breeding condition or displaying. Their dorsal fin tends to be more pointed.
- Females are plainer in colour — the olive-brown base with iridescent sheen remains, but the orange-red flush is absent or faint. A gravid female will show a noticeably rounder abdomen when carrying eggs.
Outside of breeding condition, males can be duller and harder to distinguish from females, particularly in young or recently acquired fish. Give them time to settle and colour up before drawing firm conclusions about sex.
How do Thick-lipped Gouramis breed?
Thick-lipped gouramis are bubble-nest builders and are considered relatively easy to breed by gourami standards — one reason they are recommended for fishkeepers wanting their first experience with labyrinth fish reproduction.
The sequence follows the pattern typical of the group: the male constructs a raft of mucus-coated bubbles at the surface, often anchored to floating plants or a leaf. He then courts the female with an arching display. When she is receptive, he wraps around her in an embrace during spawning, fertilising eggs as they are released. The eggs float up and the male collects them, placing them into the bubble nest. He guards the nest aggressively and tends the eggs until they hatch (roughly 24–36 hours at breeding temperature) and until the fry are free-swimming (a further two to three days).
To trigger spawning, condition both fish on high-protein live or frozen foods, and consider a partial water change with slightly cooler water followed by a gradual return to the upper temperature range. Once the male begins building a nest, add the female and monitor. Remove the female after spawning to protect her from the now-territorial male. Raise fry on infusoria or commercial fry food initially, transitioning to baby brine shrimp as they grow.
What diseases do Thick-lipped Gouramis get?
The thick-lipped gourami is a hardy species but shares common freshwater fish vulnerabilities:
- Ich (white spot): Small white dots on fins and body, caused by the parasite Ichthyophthirius multifiliis. Usually introduced with new fish or plants. Quarantine all new additions for two to four weeks to prevent introduction.
- Fin rot: Ragged, receding fin edges caused by bacterial infection, almost always associated with poor water quality. Maintaining a clean, well-cycled tank is the primary prevention.
- Velvet (Oodinium): A dusty gold or rusty sheen on the body. More common when fish are stressed or exposed to infected tank mates; quarantine and stable conditions are key prevention.
- Labyrinth organ issues: Cold, dry air above the waterline can irritate the organ. Keep the lid fitted and maintain temperature in the 22–28 °C range.
The best disease prevention is a stable, clean environment — regular partial water changes, avoiding overstocking, quarantining new fish, and not chasing extreme water-change schedules that shock the tank chemistry.
Health note: disease diagnosis and medication dosing are beyond the scope of this care profile. If your fish show symptoms, confirm against a reputable veterinary or fish-health resource before medicating, and address water quality first.
How long do Thick-lipped Gouramis live?
In a well-maintained aquarium, thick-lipped gouramis live 3–5 years. Like most fish sold in the hobby, individuals at a fish store may already be several months old, so the window of time with a healthy adult fish under your care is typically in the two-to-four-year range. Stable water conditions, a varied diet and minimal chronic stress (from compatible tank mates, adequate space, and gentle flow) are the main factors that push lifespan toward the upper end of that range.
Frequently asked questions
Is the thick-lipped gourami the same as the dwarf gourami?
No — they are separate species. The dwarf gourami (Trichogaster lalius) is smaller, more vividly coloured, and generally more delicate. The thick-lipped gourami grows slightly larger, is typically hardier, and has a subtler olive-brown and iridescent colouration.
Will thick-lipped gouramis fight each other?
Males can be mildly territorial with one another, especially in small tanks. Keep one male with one or two females, or provide plenty of plants and sight breaks if housing more than one male in a larger tank.
What you need to keep a thick-lipped gourami
The baseline is a heated, filtered 60 L+ tank: a reliable heater to hold 22–28 °C (72–82 °F), a gentle filter that won't batter a thick-lipped gourami in the current, and a tight-fitting lid. Cycle the tank fully before adding any fish.
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