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Breeding / Bubble-nest builders
Pearl gourami
Bubble-nest builders · Easy

Breeding the pearl gourami

Bubble-nester; the male builds and guards the nest. Males can be rough with the female during breeding, so give plenty of cover and remove her after spawning.

Full species page

Step by step

Pairing

Buy 6 young fish and let them pair up. Condition with live foods before spawning.

Breeding tank

A 20-30 gallon (75-110 L) planted tank, 27-28 C, lots of floating plants and a lid. Keep the water soft and slightly acidic.

What starts it

Warm water, floating plants, rich food and a settled pair.

Eggs and young

200-300 eggs per spawning; they hatch in about 20-30 hours and fry swim freely 4-5 days later.

Raising the fry

Feed infusoria and then baby brine shrimp. Remove the female after spawning and the male when fry swim free. Keep a lid on to keep the air warm.

Common mistakes
  • Taking too long to remove the female
  • Cold air under the lid
  • Leaving the male with fry too long
Setup blueprint

Home setup

One breeding tank for the pearl gourami, drawn to scale from the breeding guide.

70 cm long · 30 cm deep35 cm123456
  1. 1
    Breeding tank: 75 L · about 70 × 30 × 35 cm, 75–110 L from the breeding guide
  2. 2
    Sponge filter and air pump · gentle and safe for eggs and fry
  3. 3
    Heater, 27–28 °C · temperature from the breeding guide
  4. 4
    Floating plants · named in the guide
  5. 5
    Plants for cover · named in the guide
  6. 6
    Lid · from the guide

Water: 27–28 °C · pH 6–7.5 · soft water

A plan from the breeding guide and an adult size of 12 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 pearl gourami in numbers.

12234120 cm rack, 3 shelves
  1. 1
    1 breeding tank, 75 L · about 70 × 30 × 35 cm, set up like the home tank
  2. 2
    2 grow-out tanks, 150 L each · about 80 × 40 × 50 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 · 27–28 °C

In total: 3 tanks, about 375 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

♂Male
♀Female
  1. 1
    Colour
    • MaleMore colourful
    • FemalePlainer
  2. 2
    Throat
    • MaleAn orange-red throat
    • MaleBreast that brightens when breeding
  3. 3
    Fins
    • MaleLonger fins
  4. 4
    Back fin (dorsal)
    • MaleA pointed dorsal
  5. 5
    Body shape
    • FemalePlumper

Tip: Throat colour

From the checked notes: “Mature males are more colourful, with an orange-red throat and breast that brightens when breeding, and longer fins with a pointed dorsal. Females are plainer and plumper.” Numbers sit on the part of the body each difference is about. Tap a picture to see it bigger.

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.