Breeding / Mouthbrooders
Mouthbrooders · Easy

Breeding the eretmodus cyanostictus

Biparental mouthbrooder: the female broods the eggs first, then passes the young to the male, who carries the fry for another 7-14 days.

Step by step

Pairing

Keep a group of 6 and let pairs form; each pair claims rocky territory.

Breeding tank

100-150 L rocky tank with strong flow and hard alkaline water (pH 8-9); algae-grown rocks are a bonus.

What starts it

Stable pair, good conditioning and strong water movement.

Eggs and young

10-30 eggs. The female carries the brood for over 2 weeks, then the male incubates the fry for a further 7-14 days.

Raising the fry

Fry are released after 3 weeks and need powdered flake and newly hatched brine shrimp.

Common mistakes
  • Weak current and poor oxygen
  • Too small a group
  • Mixing with boisterous mbuna

Male or female

Difficult to sex. Adult males tend to be larger, with slightly longer pelvic fins.

Can I breed it in my tank?

  • Good for a first breeding project.

Day-by-day plan

Typical for mouthbrooders

  1. 21 days beforeGroup and condition

    Usually one male with several females. Feed high-quality food.

  2. Day 0Spawning

    The female takes the eggs into her mouth and stops eating.

  3. Day 21Release

    After about 3 weeks the female releases fully formed fry. Many breeders move her to a quiet tank first.

  4. Day 21First food

    Fry eat crushed flake and baby brine shrimp straight away.

  5. Day 90Grow-out

    Fry are a few centimetres long after about 3 months.

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

Simulator: guided

Stage 1 of 5Group and condition

Usually one male with several females. Feed high-quality food.

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.