Fruit flies, or Drosophila are an excellent food for most small fish, largely representing the natural killifish diet of invertebrates. Flies are the perfect food for surface dwelling fish species, but even killies from the lower strata, like Nothobranchius can be trained to eat them. Drosophila larvae are also a good food for killies, and although rarely a 'favourite' food, are an easy source of small food when worms are not available.

A Rivulus xiphidius eyes up a fruit fly
Feeding fruit fly larvae to killifish
Larvae of any size can be fed to killies to suit their needs. Lots of larvae can be scraped from the sides of their vial, and if a drip of water is added , the rest will make their way out of the media and up the sides. After this you can leave the remaining larvae to hatch turn into flies, or to be really thorough you can add the contents of the vial to a strong (3M) salt solution. The food dissolves away or sinks and the larvae will float, allowing them to be scooped out with a net, rinsed and fed. It is crucial not to over feed with Drosophila larvae, as they drown very quickly (1 hour or less) and although fish do eat them, they do not eat them with the same relish that they enjoy other insect larvae.

Cute fish look evil from above
Feeding with flies
Simple throw them in! The flies float on the surface, sometimes in clumps. If they can get to the sides they will climb out. Feeding fish with fruit flies is easy when the fish are hungry and waiting, however some will always escape. Surface feeders, such as Epiplatys will devour them quickly, however other species need to be trained, not so much to eat them, but to notice that they are there! Unless your fish are mad for fruit flies, only feed a few at a time! Again, 5-8 minutes in a freezer can immobilise flies for some time, but they do wake up after a few seconds in warm tank water.
Fruit fly cultures for sale
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York Haven, Pennsylvania, 173**, UNITED STATES OF AMERICA
$18
Drosophila Hydei (also known as hydei) are likely the most common fruit fly and measure about 1 / 8 of an inch.
For best results store at 75-78°F and 60-80% humidity
This producing culture will be ready to feed from in 3-5 days after arrival.
Live arrive is guaranteed when you select Heat / Cold pack.
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Dover, Pennsylvania, 173**, UNITED STATES OF AMERICA
$35
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...
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Xenia, Ohio, 453**, UNITED STATES OF AMERICA
$16
What You??re Buying
Live, producing Black melanogaster flighted fruit fly culture. Cultures ship fresh and are ideal for reptiles, amphibians, invertebrates, and small insectivores. These are flighted and DO fly
Why Black melanogaster
Black melanogaster are smaller than hydei and ideal for pets that need a slightly smaller feeder. Perfect for animals who need flying prey items
Culture Notes
Cultures require 7??14 days after arrival to become fully productive. Plan feedings ...
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Cleveland, Georgia, 305**, UNITED STATES OF AMERICA
$100
??PLEASE READ BEFORE PURCHASING??
(WHAT YOU RECEIVE)
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Name: "Golden" Drosophila melanogaster / "Golden" Drosophila hydei
Drosophila melanogaster / Drosophila hydei
(x4 CULTURES)
Sizes: Flies, Larva & Eggs
Count: 50+ Per Culture (will produce prolifically)
Sex: M / F
WITH EXTREME TEMPS THERE WILL ...
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Xenia, Ohio, 453**, UNITED STATES OF AMERICA
$15
Fully Prepared Fruit Fly Culture ?? Media & Excelsior Included (No Flies)
This listing is for a fully prepared fruit fly culture that is ready for immediate use ?? just add flies
All culture media is freshly mixed and poured, and each container includes excelsior for proper surface area and airflow
This option is ideal for breeders who already have flies on hand, want to start fresh cultures, or need additional production containers without purchasing live insects
What??s ...
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