Fry feeding guide

Best live food for danio fry

Danio fry run on fast-forward: eggs hatch in two to three days, fry are free-swimming almost immediately, and a culture started “when I see fry” is a week late. The plan is short — microworms, then baby daphnia, then done — but it has to be running before the eggs are.

Zebra danio larvae under magnification, days after hatching

Photo: Hellblondinko, Wikimedia Commons, CC BY 4.0

The feeding plan

Stage	Feed this	Why it works
Free-swimming (day ±3–4)	Microworms (+ vinegar eels)	Fry are too small for daphnia but take microworms at once; eels cover the surface and the smallest fry
Weeks 2–3	Newborn daphnia / moina	The growth gear-change: danio fry on baby moina reach juvenile size weeks ahead of dry-fed batches
Weeks 4–6	Adult moina most days	Keep the culture harvesting; even growth now prevents a tank of three sizes later
Juveniles	Join the adult danio plan	Daphnia a few times a week alongside a crushed staple

Practical tips

Start the microworm tub the day you put the spawning group together — the whole schedule is that tight.
Spawn over marbles or a mesh so eggs fall out of adult reach; danios eat their eggs industriously.
Feed 3 small meals a day; danio fry burn food fast and stunt quickly on twice-daily feeding.

Watch out: Fry tanks foul fast at this feeding rate. Daily small water changes are not optional garnish — they are half the growth recipe.

Common questions

What do zebra danio fry eat?

Microworms from free-swimming (about day 3–4), vinegar eels for the smallest, and newborn daphnia (moina) from week 2 — that short ladder produces the fast, even growth danios are famous for when fed properly.

How long until danio fry eat daphnia?

Newborn moina from about the second week. Adult-sized moina a week or two later — net the smallest from the culture in between.