Species feeding guide

Live food for guppies

Guppies are grazers and opportunists — in a tank with live daphnia they hunt and pick all day, the way they are built to feed. Daphnia is the staple live food for guppies; grindal worms are the breeder’s conditioning extra.

Photo: Carlos Eduardo Joos, Wikimedia Commons, CC BY 2.0

The feeding plan

Stage	Feed this	Why it works
Adults & juveniles, 2–3× a week	Live daphnia	Natural grazing, excellent digestion (daphnia keeps guts moving), and strong colour and condition
Conditioning breeders	Grindal worms, small portions	Rich protein/fat for females recovering between drops and males in show condition — rotate, don’t feed exclusively
Show & grow-out tanks	Daphnia most days in small amounts	Constant low-level hunting spreads food across the whole group, so dominant fish cannot hog one big feed
Fry	See the guppy fry guide	Newborns need microworms-sized food first — full schedule on the fry page

Practical tips

A daphnia culture in a sunny bucket is effectively a self-serving guppy feeder — harvest a net-full every few days.
Feed breeders up before a drop, not after: well-fed females drop bigger, stronger fry and recover faster.
Rinse daphnia out of the culture rather than pouring culture water into the display tank.

Watch out: Grindal worms are fatty — as a daily sole food they will fatten guppies and foul the tank. They are the supplement, daphnia is the staple.

Common questions

Is daphnia good for guppies?

Yes — it is one of the best live foods for them: easy to digest, keeps the gut moving, and the constant hunting suits how guppies naturally feed. 2–3 times a week alongside a staple food is ideal.

What live food helps guppies breed?

Condition adults with a rotation of daphnia and small portions of grindal worms for 1–2 weeks. Then have microworms and vinegar eels ready — the fry will need them from day one.