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Trichogaster lalius — Dwarf Gourami

Dwarf Gourami

Trichogaster lalius

Dwarf Gourami (Trichogaster lalius) is a freshwater species with an adult-size reference of about 7 cm. It needs at least 60 litres and one individual, with its social and territorial profile taken into account.

Water Temperature

22 - 27 °C

pH Value

6 - 7.5

Water type

Freshwater

Tank level

Surface and middle

Adult size

7 cm

Minimum tank volume

>= 60 L

Minimum group

>= 1

GH

4 - 15 dGH

KH

2 - 7 dKH

TDS

80 - 295 ppm

Conductivity

125 - 461 uS/cm

Species description

Geographical Origin and Habitat: A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.
Taxonomy and Morphology: The accepted scientific name is Trichogaster lalius; the verified classification records genus Trichogaster, family Osphronemidae, subfamily Trichogastrinae, order Anabantiformes. Historical names remain searchable as synonyms rather than separate species.
Social Behavior: Dwarf Gourami is normally kept as a single individual and does not require conspecifics. The minimum reference is one individual; sex, maturity and available space can require a more conservative composition. Observe access to food, resting behaviour, chasing and use of shelter. Isolation, persistent competition or aggression means the number, composition or environment needs to be corrected.
Coloration and Sexual Dimorphism: Colour and shape can vary with age, sex, physiological state and environmental conditions. Identification and sexing require recognized species-level characters; one appearance or photograph is not enough.

Care, breeding and tankmates

Aquarium Setup: Dwarf Gourami needs an aquarium of at least 60 litres, sized for adult body size and a minimum group of one individual. Filtration, shelter and swimming room must match the species and the actual number kept. Volume alone does not make an enclosure suitable: tank shape and length, usable area, oxygenation and the ability to separate territories must reflect adult behaviour.
Diet and Feeding: The recorded diet is omnivorous. Offer appropriately sized foods varied within that category, and adjust quantity and frequency from actual intake, body condition and leftovers. One food or a fixed schedule is not suitable for every age and situation.
Water Quality: Maintain stable, well-oxygenated water appropriate to a freshwater species; the card's reference values are 22–27 °C, pH 6–7.5. Verify conditions with reliable tests and size maintenance and filtration to the actual load. Ranges are not automatic thresholds for treatment or rapid chemical correction.
Compatibility and Cohabitation: The cohabitation profile is a species to combine with caution, with a generally territorial temperament. Keep at least one individual; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Aquarium Breeding: The recorded reproductive profile is “bubble-nest building”. Breeding should be attempted only with healthy adults, separation capacity and a plan for eggs or young. Do not treat unverified triggers, sex ratios or hatch times as universal for this species.
Risks and Diseases: Use a secure cover and close escape gaps. Prevent problems through quarantine of new arrivals, stable water, appropriate feeding and daily observation. Similar signs can have different causes, so check parameters, history and diagnosis before medication. Follow the product label and qualified aquatic-veterinary advice; there is no universal reduced dose for a species or family.

Geographic origin and distribution

A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.

Origin

Cosmopolitan or introducedEurope, Mediterranean, and West AsiaSouth and Southeast Asia

Fish profile

Temperament
Territorial
Dwarf Gourami has a generally territorial temperament. Insufficient space, an unsuitable social ratio or incompatible tankmates can substantially change observed behaviour.
Diet
Omnivore
Omnivorous; accepts flakes, pellets, frozen daphnia, brine shrimp, and vegetable matter.
Life expectancy
3-4 years
Adult size
7 cm
Sex ratio
Solitary
Dwarf Gourami is normally kept as a single individual and does not require conspecifics. The reference minimum is one individual and must not be read as permission to overcrowd the aquarium.
Feeding frequency
Twice daily
1-2 times daily in moderate portions.
Bioload
Low
Low. Produces minimal waste, highly suited for well-planted tanks.
Flow
Stagnant
Very gentle or stagnant water, prefers calm surface zones with floating plants.
Jump risk
Yes
High risk. Good jumpers; a tightly covered aquarium is mandatory.
Reproduction
Bubble nest builder
Bubble nest builders. Males incorporate plant debris into the surface nest and guard the eggs until hatching.
Compatibility & tankmates
With caution
The cohabitation profile is a species to combine with caution, with a generally territorial temperament. Keep at least one individual; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Tank level
Top/Middle
Upper and middle zone. It prefers to move among the long stems of marsh plants or in the undergrowth of floating plants.

Scientific Parameters & Models

FishBase

Window to the official scientific data of the species

FishBase v25.04Data synced on: 06/15/2026
Trophic level
2.9 ± 0.1 se
Resilience
Medium (1.4 - 4.4 years)
Phylogenetic uniqueness (PD50)
0.5625
Bayesian Length-Weight
a = 0.01445, b = 2.99
VulnerabilityLow vulnerability (10 / 100)