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

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Golden Hydei Fruit Fly Culture

Ogden, Utah, 844**, UNITED STATES OF AMERICA

$15

Flightless Fruit Fly Culture (Golden Drosophila Hydei). Condition is New. These flightless fruit fly cultures come in a 32oz cup with a ventilated lid, excelsior wool and culture mix. It will come with 100 adult flys that will already be laying new generations upon arrival. For best practices, do not use flys until 5 days after first generation hatches to ensure new generation. These cultures will last you several weeks. Do not be alarmed if flies do not make it in transportation. They only live... more

Fruit Fly Culture HYDEI 3 Pack Lizard And Dart Frog Food Live

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

$30

This Fruit Fly Culture HYDEI 3 Pack is perfect for feeding your Lizards and Dart Frogs. The live food is guaranteed to provide your pets with the necessary nutrients to keep them healthy and active. The pack is made from high-quality ingredients and is sure to satisfy your pet's appetite.
The brand, Crazy Frog Lady, is well-known for producing top-quality pet supplies. With this pack, you can be sure that your pets are getting the best possible food. This pack is ideal for reptile owners who... more

Melanogaster "Turkish Glider" (Fruit Fly Culture) - LIVE FEEDER INSECT DART FROG

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

$30

??PLEASE READ BEFORE PURCHASING??
- IN EXTREME TEMPS LIVE ARRIVAL GUARANTEE
WILL ONLY BE IN EFFECT WHEN UPGRADED TO
PRIORITY MAIL OR IN TEMPS BETWEEN 0 - 85F
- COOL PACKS WILL BE ADDED IF NEEDED
(I CHECK TEMPS BEFORE SHIPMENT)
- UPGRADED PRIORITY SHIPPING IS RECOMMENDED
FOR THE SAFEST ARRIVAL
(WHAT YOU RECEIVE)
---------------------------------------------------------------
Name: "Turkish Glider" Melanogaster Fruit Fly
Size: 1 / ... more

Buzzatii Fruit Fly Culture 32oz Live Dart Frog Food Reptile Food Live Insects

Middletown, Pennsylvania, 170**, UNITED STATES OF AMERICA

$10

Our Flightless Fruit Fly Culture 32 oz are made with Repashy
Live Buzzatii Fruit Flies are a great option for feeding small lizards and many species of frogs, especially because of their reproduction cycle. Each culture of flightless fruit flies has a lifespan of about one month, and even after they die, they will continually pupate from eggs laid by the adults in the culture! This will allow you to keep fruit flies for a while, as long as they are taken care of accurately
Oue Fruit flies... more

3 Pack -Hydei, Golden Hydei & Turkish Glider Fruit Fly Cultures -Hocks Herps LLC

York Haven, Pennsylvania, 173**, UNITED STATES OF AMERICA

$30

If you're looking for a great way to keep your reptile happy and healthy, look no further than these three fruit fly cultures from Hocks Herps LLC. The pack includes cultures of Hydei, Golden Hydei, and Turkish Glider fruit flies, all of which can provide the perfect meal for your pet

These cultures are easy to maintain and can provide a constant source of nutrition for your reptile. Simply open the culture and let the flies fly out, or use a small cup to dust with calcium and ... more