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

Breeding the mahachai betta

Bubble nester: in the wild the pair nests in water held in the leaf bracts at the base of nipa palms; the male guards the nest alone.

Full species page

Step by step

Pairing

A conditioned pair, introduced under supervision.

Breeding tank

30 L tank with floating plants and lightly brackish water (SG 1.003-1.005 optional).

What starts it

Live foods and warm water.

Eggs and young

Egg count not found in sources. Eggs hatch in 24-48 hours; fry stay in the nest 3-4 more days.

Raising the fry

Infusoria then baby brine shrimp.

Common mistakes
  • Strong flow
  • Too much salt
  • Putting two males together
Setup blueprint

Home setup

One breeding tank for the mahachai betta, drawn to scale from the breeding guide.

45 cm long · 25 cm deep30 cm1234
  1. 1
    Breeding tank: 30 L · about 45 × 25 × 30 cm, 30 L from the breeding guide
  2. 2
    Sponge filter and air pump · gentle and safe for eggs and fry
  3. 3
    Heater, 22–28 °C · this species' normal range
  4. 4
    Floating plants · named in the guide

Water: 22–28 °C · pH 7–8.5

A plan from the breeding guide and an adult size of 6 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 mahachai betta in numbers.

12234120 cm rack, 3 shelves
  1. 1
    2 breeding tanks, 30 L each · about 45 × 25 × 30 cm, set up like the home tank
  2. 2
    2 grow-out tanks, 60 L each · about 60 × 30 × 35 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 · 22–28 °C

In total: 4 tanks, about 180 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 more colourful (iridescent green to blue-green on a brown-black body, two green bars on the gill cover) and grow longer fins than females.

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.