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Encyclopedia / Gouramis & Bettas / Red-tail giant gourami
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Variations

1 kinds · tap one for a closer look

Red-tail giant gourami

Osphronemus laticlavius · Gold giant gourami, Osphronemus laticlavius

Intelligent and recognises its keeper.

Local price coming soon
· real AED shop prices, never conversions
50 cmBody length, without tail ✓
22–30 °CTemperature ✓
6.5–8pH ✓
648 LSmallest tank ✓
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Tank mates
Check your own mix →
✕Not recommended
  • Red-tail giant gourami eats animals up to about 15 cm. Neon tetra only grows to 2.5 cm.
✕Not recommended
  • Red-tail giant gourami eats animals up to about 15 cm. Cardinal tetra only grows to 3 cm.
✕Not recommended
  • Red-tail giant gourami eats animals up to about 15 cm. Black neon tetra only grows to 3.2 cm.
!With conditions
  • Rift lake cichlids like frontosa need hard, alkaline water and a busy, cichlid-only tank.
  • Only a narrow pH range suits both: exactly 8.
!With conditions
  • Only a narrow temperature range suits both: 22–23 °C.
✓Compatible
✓Compatible
✓Compatible
✓Compatible
✓Compatible

124 species in our list are a good match.

Facts checked against sources on 16 Oct 2026. ✓ means a source backs it; ? means no reliable source yet. See sources

Care and water

Hardness ✓5–25 dGH
Group size ?Can live alone
Temperament ✓Peaceful
Swims at ?All levels
Care level ✓Moderate
Diet Omnivore
Lifespan ?Unknown
Size in shops 5–12 cm
Growth Medium

Behavior

Intelligent and recognises its keeper. It is generally calm but will eat smaller fish and must be kept with similar-sized tankmates.

Food

Pellets, vegetables, fruit, worms and insects.

Tap a food to see what it is.

Male or female

Not well documented; males are thought to be the more colourful sex.

Health

Common problems. Tap one to see the signs. This is a guide, not a diagnosis.

Breeding

Nest builder ·

Not yet reported in aquaria. It probably breeds like O. goramy, where the male builds a large nest of plant material (grasses, roots) and guards eggs and fry.

Pairing

Needs a very large tank or pond and a mature pair.

Setup

3,000 L or large pond with plant material for nest building.

What starts it

Seasonal warm conditions and plenty of food.

Eggs

1,000-2,000 eggs.

Raising the fry

Fry feed on infusoria then crushed pellets.

Common mistakes
  • Insufficient space
  • Mixing sexes too early
Full breeding guide, day-by-day plan and simulator →

Where it lives in the wild

RegionSabah, Malaysian Borneo
Rivers and lakesKinabatangan River basin
HabitatLarge lowland rivers
Native rangeAbout 200 km across
See it on the world map

The story of the red-tail giant gourami

A large gourami (to 50 cm SL) from Borneo, described by Roberts in 1992. Adults develop bright red fin edges with filaments and a blue-green to almost black body. It can learn to recognise its owner.

American ichthyologist Tyson Roberts described this giant gourami in 1992 from Sabah. It is a large, long-lived fish for very big aquariums.

First described by Tyson R. Roberts in 1992.

  • It grows large, often well over 40 cm long.
  • It is one of only a few species of giant gourami.
  • Its red-edged tail gives it its common name.

Sources

13 facts checked with sources

  • Scientific name

    Valid (Roberts 1992; holotype from Malaysian aquarium stock). IUCN: Endangered (FishBase: EN B1ab(iii), assessed 21 Jan 2019). Legacy aka 'gold giant gourami' and the 'Gold' variant: gold/yellow giant gouramis in the trade are normally colour forms of O. goramy, not this species (not confirmed by a fetched source; reviewers should check).

    Eschmeyer's Catalog of Fishes: species in genus Osphronemus (updated 21 Sep 2026) · FishBase: Osphronemus laticlavius summary
  • Familycorrected

    Legacy has no family field; sourced value recorded.

    FishBase: Osphronemus laticlavius summary
  • Size

    Both give 50 cm SL (standard length).

    Seriously Fish: Osphronemus laticlavius · FishBase: Osphronemus laticlavius summary
  • Temperature

    Legacy 22-30 lies inside Seriously Fish 20-30 (best ~24-27 °C).

    Seriously Fish: Osphronemus laticlavius
  • pHcorrected

    Legacy 6-8; Seriously Fish lower limit 6.5.

    Seriously Fish: Osphronemus laticlavius
  • Hardnesscorrected

    Legacy has no hardness; Seriously Fish value recorded.

    Seriously Fish: Osphronemus laticlavius
  • Smallest tankcorrected

    180 x 60 x 60 cm = 648 L. Legacy 2,500 L is far more generous; reasonable as a recommendation, but the sourced bare minimum is 648 L.

    Seriously Fish: Osphronemus laticlavius
  • Temperamentcorrected

    Peaceful with large tankmates but eats small fish; matches the giantgourami file's treatment. Legacy 's' (semi-aggressive) is close in practice.

    Seriously Fish: Osphronemus laticlavius
  • Care levelcorrected

    Seriously Fish rates it Moderate, mainly because of tank size; legacy care 1 (easy).

    Seriously Fish: Osphronemus laticlavius
  • Where it livescorrected

    Legacy has no range field; sourced value recorded.

    Eschmeyer's Catalog of Fishes: species in genus Osphronemus (updated 21 Sep 2026) · FishBase: Osphronemus laticlavius summary · Seriously Fish: Osphronemus laticlavius
  • Male or femalecorrected

    Legacy forehead lump in older males is known for O. goramy but no source confirms it for O. laticlavius.

    Seriously Fish: Osphronemus laticlavius
  • Breedingcorrected

    Legacy 'builds a large coconut-fibre nest' is stated as fact; Seriously Fish says aquarium breeding is not reported. Coconut fibre is a material offered in O. goramy farming, not a sourced fact for this species.

    Seriously Fish: Osphronemus laticlavius
  • Storycorrected

    Legacy says the reddish fins show 'when young'; Seriously Fish says the red fin edges develop in adults. Legacy 'often sold as a cute small fish' is not sourced for this species. IUCN Endangered.

    Seriously Fish: Osphronemus laticlavius · Eschmeyer's Catalog of Fishes: species in genus Osphronemus (updated 21 Sep 2026)