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Breeding / Cave spawners
Cave spawners · Moderate

Breeding the twig catfish

Lays eggs on a vertical surface, very often the tank glass; the male stays with them and fans them until they hatch.

Full species page

Step by step

Pairing

Keep 2-3 males with several females; the male guards the eggs.

Breeding tank

80-100 L tank with sand, smooth bamboo or pipe caves, and cool, well-oxygenated water.

What starts it

A cool water change and good flow often triggers spawning.

Eggs and young

Eggs are laid on an open vertical surface, very often the tank glass, not in a cave, and hatch in about 6-10 days under the male's care.

Raising the fry

Fry are tiny; feed biofilm, crushed spirulina flake, and microworms. Keep the water very clean.

Common mistakes
  • Hard, warm water
  • Rough substrate that damages their bellies
Setup blueprint

Home setup

One breeding tank for the twig catfish, drawn to scale from the breeding guide.

135 cm long · 20 cm deep25 cm1234
  1. 1
    Breeding tank: 80 L · about 135 × 20 × 25 cm, 80–100 L from the breeding guide
  2. 2
    Sponge filter and air pump · gentle and safe for eggs and fry
  3. 3
    Slate or flat stone · named in the guide
  4. 4
    Cave · named in the guide

Water: 24–27 °C · pH 6–7 · sand bottom

A plan from the breeding guide and an adult size of 22.5 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 145 cm rack for breeding the twig catfish in numbers.

1223145 cm rack, 3 shelves
  1. 1
    1 breeding tank, 80 L · about 135 × 20 × 25 cm, set up like the home tank
  2. 2
    2 grow-out tanks, 160 L each · about 135 × 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

In total: 3 tanks, about 400 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

Mature males have a broader snout (rostrum) that grows rows of bristle-like odontodes along its sides; females lack them.

Can I breed it in my tank?

  • Takes some experience.

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.
  • Corydoras usually need a big, cooler water change (like rain) to start spawning.

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