Breeding / Cave spawners
Cave spawners · Hard

Breeding the nagy's licorice gourami

Cave spawner. The male holds a small territory around a cave (leaf litter in nature; a small pot, pipe or film canister in the aquarium) and the eggs are stuck to the cave ceiling. Some males build a small bubble nest inside the cave, others do not. The male alone cares for the eggs and fry; the female defends the area outside.

Step by step

Pairing

A conditioned pair in a small, dim tank with a cave.

Breeding tank

10-20 L of soft acidic water (pH 4.5-5.5) with plant cover and half coconut shells.

What starts it

Very soft acidic water and live foods.

Eggs and young

Eggs hatch in about 24-36 hours; fry become mobile 4-6 days later and are fully free-swimming and leave the cave after 3-5 more days, when parental care stops. First foods: Paramecium or rotifers, then Artemia nauplii.

Raising the fry

Fry feed on infusoria then newly hatched brine shrimp.

Common mistakes
  • Hard water
  • Active tankmates
  • Dry food diet

Male or female

Males have a black band in the dorsal, anal and tail fins edged on both sides by iridescent blue bands, and iridescent emerald-green pelvic fins with a very short filament; breeding males turn reddish-brown above and dark below. Females are much plainer, lack the blue fin bands and turn pale yellowish when breeding.

Can I breed it in my tank?

  • Hard: for experienced breeders.

Day-by-day plan

Typical for cave spawners

  1. 21 days beforeSet up caves

    Give one cave per pair or female, plus a varied diet.

  2. Day 0Spawning in the cave

    Eggs are laid inside the cave and guarded, usually by the male.

  3. Day 4Eggs hatch

    Eggs hatch in 3–7 days depending on the species and temperature.

  4. Day 10Fry leave the cave

    Feed baby brine shrimp and crushed food. Plecos need wood and vegetables.

  5. Day 60Grow-out

    Fry grow on in their own tank.

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

Simulator: guided

Stage 1 of 5Set up caves

Give one cave per pair or female, plus a varied diet.

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.