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Breeding / Egg scatterers
Egg scatterers · Easy

Breeding the lyretail killifish

Spawns in fine-leaved plants such as java moss or in spawning mops; eggs are laid a few at a time every day.

Full species page

Step by step

Pairing

Pair or trio.

Breeding tank

Small planted tank with mops.

What starts it

Warm water.

Eggs and young

About 10-20 eggs a day for around 2 weeks; they hatch in 10-20 days depending on temperature.

Raising the fry

Brine shrimp.

Common mistakes
  • Hard water
  • Too much light
  • Poor food

Male or female

Male Lyretail killifish
Male
Female Lyretail killifish
Female

Males are larger and more brightly coloured, with extended tips to the tail, dorsal and anal fins (lyre tail); females are smaller, plainer and rounder.

Can I breed it in my tank?

  • Use a separate small tank with a sponge filter and spawning mops, so the eggs aren't eaten.
  • Good for a first breeding project.

Day-by-day plan

Typical for egg scatterers

  1. 14 days beforeCondition the parents

    Feed live or frozen food twice a day. Keep males and females apart if you can.

  2. Day 0Spawning

    Eggs are scattered over mops or fine plants, often at first light. Remove the parents straight after.

  3. Day 1Eggs hatch

    Most eggs hatch in 1–2 days. Keep the tank dim and remove white (fungused) eggs.

  4. Day 4Free swimming, first food

    Fry use up the yolk and start swimming. Feed infusoria or liquid fry food several times a day.

  5. Day 8Baby brine shrimp

    Switch to newly hatched brine shrimp or microworms. Start small, daily water changes.

  6. Day 21Crushed flake

    Add finely crushed flake. Sort fry by size so the big ones don't eat the small ones.

  7. Day 60Ready to move

    Most small fish reach about 2 cm in 2–3 months and can join the main tank.

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

Simulator: guided

Stage 1 of 7Condition the parents

Feed live or frozen food twice a day. Keep males and females apart if you can.

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.