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Breeding / Bubble-nest builders
Thick-lipped gourami
Bubble-nest builders · Easy

Breeding the thick-lipped gourami

Bubblenester. The male builds a large nest among floating plants, spits the sinking eggs into it and guards the brood; remove the female after spawning. Keep the tank tightly covered so the fry have warm, humid air for the labyrinth organ.

Full species page

Step by step

Pairing

Put a conditioned pair into a 40-60 L tank with floating plants.

Breeding tank

40-60 L planted tank with floating cover, low flow, 28 C and level lowered to 15 cm.

What starts it

Warm water, live and frozen food, a small water change.

Eggs and young

500-1,000 eggs; they hatch in about 24-36 hours and the fry swim freely 2-3 days later.

Raising the fry

Infusoria for 3 days, then newly hatched brine shrimp; remove the female after spawning.

Common mistakes
  • Overly strong filter
  • Cold air above the water
  • Aggressive male harassing the female
Setup blueprint

Home setup

One breeding tank for the thick-lipped gourami, drawn to scale from the breeding guide.

60 cm long · 25 cm deep30 cm12345
  1. 1
    Breeding tank: 40 L · about 60 × 25 × 30 cm, 40–60 L from the breeding guide
  2. 2
    Sponge filter and air pump · gentle and safe for eggs and fry
  3. 3
    Heater, 28 °C · temperature from the breeding guide
  4. 4
    Floating plants · named in the guide
  5. 5
    Plants for cover · named in the guide

Water: 28 °C · pH 6–7.5

A plan from the breeding guide and an adult size of 10 cm. Tank shape is a standard 2 : 1 : 1.2 box, at least 6 adult lengths long. Check each step in the guide above.

Setup blueprint

Business setup

A 120 cm rack for breeding the thick-lipped gourami in numbers.

12234120 cm rack, 3 shelves
  1. 1
    1 breeding tank, 40 L · about 60 × 25 × 30 cm, set up like the home tank
  2. 2
    2 grow-out tanks, 80 L each · about 65 × 30 × 40 cm; twice the breeding tank, never smaller than this species' smallest tank
  3. 3
    Shared air pump and air line · one line along each shelf feeds a sponge filter in every tank
  4. 4
    Heat the room or each tank · 28 °C

In total: 3 tanks, about 200 L of water. A litre of water weighs about 1 kg, so check that the floor and rack can take the weight.

Sizes are worked out from the breeding tank in the guide. Tanks fit a standard 120 cm rack when they can; bigger tanks go on their own stands.

Male or female

Males are larger and more colourful, and mature males develop slightly pointed dorsal and anal fins. In the gold/sunset strain females are almost as colourful as males.

Can I breed it in my tank?

  • Good for a first breeding project.

Day-by-day plan

Typical for bubble-nest builders

  1. 10 days beforeCondition and introduce

    Feed well, then let the female see the male through glass before putting them together.

  2. Day 0Spawning under the nest

    The male wraps the female and places eggs in the nest. Remove the female after spawning.

  3. Day 2Eggs hatch

    Eggs hatch in 24–48 hours. The male catches falling fry and returns them to the nest.

  4. Day 4Free swimming

    Remove the male. Feed infusoria and keep the air above the water warm and humid.

  5. Day 10Baby brine shrimp

    Move on to baby brine shrimp and microworms. Change small amounts of water daily.

  6. Day 56Separate males

    Males start fighting at about 8 weeks and need their own jars.

A general guide for this breeding type. Days change with temperature and species.

Simulator: guided

Stage 1 of 6Condition and introduce

Feed well, then let the female see the male through glass before putting them together.

Simulator: try it yourself

Set up a virtual breeding tank and see what would likely happen.

No spawning
  • Without live or frozen food the parents aren't in breeding condition.

An educational estimate from the breeding rules, not a promise.