Killifish

What is the best fruit fly food?

Fruit flies are not fussy. In fact you will probably find them living on all sorts of things - old fruit, cereals, bread etc. When organic matter ferments, they are never far away. However, when we culture flies we need to be provide food for both adults and larvae, and it has to be a food, or media, that is long lasting, and of a suitable consistency to remain in place when the fly containers are inverted. The adults eat yeasts at the surface, whilst the larvae bury down into the media.

I use the Sussex mix, but have included two commonly used, and much simpler recipes. The Sussex mix is a bit of a chore to make up, but it's use solves all of the problems of 'quick' recipes, and is by far the best choice if large numbers of flies are needed.

Drosophila media recipes

  • Banana - Bunch of bananas, 1/2 cup sugar, packet of oats, 1 packet bakers yeast. Blend it all together! Mold inhibitors if available.
  • Potato - 1 part bakers yeast to 10 parts mash potato mix. Add hot water! Mold inhibitors if available.
  • Sussex Mix - Add 100g maize meal to 95g sugar (or molasses), 6g agar, 19g bakers yeast to 1 litre of water. Bring to the boil stirring from time to time. This mix must boil for several minutes to activate the agar. Leave to cool for a while and then stir in 2g Nipagin (methylparaben) or perhaps try tegosept or calcium propionate (mold inhibitor used in bread) and any vitamins (I use dog multivitamins). As it cools, it sets into a gel-like solid. The media can be stored either in small vials that you will keep the flies in, or in a larger container that the media can be decanted from.
Fruit fly food recipe: ingredients for Sussex mix
Fruit fly food recipe: ingredients for Sussex mix
The mix is mainly water, and needs agar to solidify it
The mix is mainly water, and needs agar to solidify it
Once it has boiled for a few minutes, the mix gets considerably thicker
Once it has boiled for a few minutes, the mix gets considerably thicker
The media is for the larvae, the adult flies eat yeast sprinkled on top
The media is for the larvae, the adult flies eat yeast sprinkled on top

I strongly recommend the Sussex mix. It is long lasting, solid enough to stay in its vial when tapped upside down, and meets all the nutritional needs of the larvae. It also remains moist for a week or more, and it's life can be prolonged with a drop of water or two.

Other media can feed the flies adequately, but are often insufficiently solid when the vials are inverted to collect flies. They are very often too wet (banana) or too dry (mash potato}. This is much less of a problem for those that keep amphibians, who can place the culture within the animals enclosure. But for fish keepers, the flies must be collected. The Sussex media sets as a semi-rigid gel, which makes handling the flies incredibly easy.

If your chosen media is too wet, adding wood shavings can keep the media in place (to some extent) and provide dry walkways for the emerged flies to climb up onto. This is never required with the Sussex media, but always required with a banana based media.

Whatever recipe you follow, it will feed the larvae, but not the parent flies; all food should be sprinkled with brewers yeast (not the bakers yeast used in the recipes above) immediately before adding the adult flies. Not only does this provide a source of food for the flies, but also ensures the surface is dry, and the delicate flies will not get stuck down in sticky media.



Fruit fly cultures for sale

Killi.co.uk is funded by its visitors. When you buy through links on our site we may earn an affiliate commission. For more info see terms and conditions.

!!GOLDEN MORPH COMBO!! - Mel. & Hydei Flightless Fruit Fly - LIVE FEEDER INSECT

Cleveland, Georgia, 305**, UNITED STATES OF AMERICA

$70

??PLEASE READ BEFORE PURCHASING??
(WHAT YOU RECEIVE)
-------------------------------------------------------------------------------------
Name: "Golden" Drosophila melanogaster (x1 CULTURE)
"Golden" Drosophila hydei (x1 CULTURE)
Sizes: Flies, Larva & Eggs
Count: 50+ Per Culture (will produce prolifically)
Sex: M / F
WITH EXTREME TEMPS THERE WILL ONLY BE
LIVE ARRIVAL GUARANTEE WHEN UPGRADE TO
EXPRESS MAIL OR IN TEMPS BETWEEN 0 - 85F
(CULTURE ... more

Freshly Started Flightless Drosophila Hydei Fruit Fly Culture

Lyndhurst, New Jersey, 070**, UNITED STATES OF AMERICA

$13

Fresh Fruit Fly Hydei Cultures and they are an ideal food for Poison Dart Frogs, fish, Praying Mantids, young frogs and toads, and other reptiles, amphibians, or captive animals that require small foods... more

Completely Wingless melanogaster 32oz Fruit Fly Culture- Ice pack option

Cordele, Georgia, 310**, UNITED STATES OF AMERICA

$14

Due to winter months and cold temps, live arrival is voided without purchase of a heat pack! please be aware of this when purchasing. Live arrival voided during extreme temps. HEAT PACK OPTION AVAILABLE IF YOUR TEMPS WILL BE HIGH
Will have excelsior for surface area
DISCLAIMER: as we enter winter temps, there is a risk that cultures will not arrive alive or producing, because of this I have included a heat pack option. I will also be shipping priority VS first class so prices have ... more

Flightless Fruit Fly 2 PACK cultures Dart Frog Food Reptile Food FREE SHIPPING

Dover, Pennsylvania, 173**, UNITED STATES OF AMERICA

$20

This 2 pack of Flightless Fruit Fly cultures is the perfect addition to any reptile or dart frog owner's collection. These cultures provide a nutritious and tasty food source for your pets without the hassle of dealing with live insects. The flies are easy to maintain and will last for several weeks, ensuring that your pets are well-fed and healthy.
With free shipping included, this is a great deal that you don't want to miss out on. Whether you're a seasoned reptile owner or a new dart frog... more

Fruit Fly Culture 4Pack Variety Live Flightless Turkish Gliders Golden and Hydei

Dover, Pennsylvania, 173**, UNITED STATES OF AMERICA

$30

This Fruit Fly Culture 4Pack Variety is the perfect food for your pet reptiles. You'll receive live flightless fruit flies of different species, including Turkish Gliders, Golden, and Hydei. These fruit flies are bred by Crazy Frog Lady L L.C , a trusted brand in the pet supplies industry.
Use this variety pack to provide nutrition to your reptiles and keep them healthy. These live fruit flies are a great source of protein and are easy to digest. They also provide entertainment for your pets... more