Spawns near the surface; the eggs float straight up to the surface and can be scooped off.
Adults.
Large tank with floating plants.
Unknown.
A spawning gives about 80-220 eggs about 1.5 mm across (often over 100 a day in aquaria); they hatch in 3-4 days.
Live food.
One breeding tank for the african butterflyfish, drawn to scale from the breeding guide.
Water: 24–30 °C · pH 6.5–7.5
A plan from the breeding guide and an adult size of 12 cm. Tank shape is a standard 2 : 1 : 1.2 box, at least 6 adult lengths long. Check each step in the guide above.
A 120 cm rack for breeding the african butterflyfish in numbers.
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.
Look at the back edge of the anal fin: it is convex (curved outwards) in males and straight in females.
Typical for egg scatterers
Feed live or frozen food twice a day. Keep males and females apart if you can.
Eggs are scattered over mops or fine plants, often at first light. Remove the parents straight after.
Most eggs hatch in 1–2 days. Keep the tank dim and remove white (fungused) eggs.
Fry use up the yolk and start swimming. Feed infusoria or liquid fry food several times a day.
Switch to newly hatched brine shrimp or microworms. Start small, daily water changes.
Add finely crushed flake. Sort fry by size so the big ones don't eat the small ones.
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.
Feed live or frozen food twice a day. Keep males and females apart if you can.
Set up a virtual breeding tank and see what would likely happen.
An educational estimate from the breeding rules, not a promise.