Vinegar Eels Culture

16/12/2022 Off By aquadiradmin

You must find a means to feed fry that are too little to ingest standard fry chow if you plan to produce fish. Try vinegar eels! This easy-to-cultivate live meal is ideal for rearing newborns until they are old enough to consume baby brine shrimp.

Vinegar eels (Turbatrix aceti) are innocuous, white nematodes or roundworms that feed on the bacteria often found in vinegar and fermented drinks. Growing up to 50 microns in diameter and 1 to 2 mm in length, they are one of the tiniest and easiest-to-cultivate live meals for infant fish. Breeders typically give them to betta fish fry, killifish fry, rainbowfish fry, and other fry that require even smaller meals than baby brine shrimp (which hatch out at 450 microns in size).

Vinegar eels are ideally suited for feeding fish fry due to their numerous additional benefits. In contrast to banana worms and other micro worms, they can survive for many days in fresh water, they swim in the water column rather than sinking to the bottom, and their wiggling motions encourage infants to consume more food and grow more quickly. Vinegar eels are a great diet to feed fry until they are old enough to consume baby brine shrimp. Vinegar eels are not as healthy as baby brine shrimp since they are not born with yolk sacs.

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How Does One Commence a Vinegar Eel Culture?

Vinegar Eels Culturing Set
Vinegar Eels Culturing Set

1. Collect the following items:

  • Starter culture of vinegar eels (buy at our shop).
  • One bottle with a long neck (like a wine bottle).
  • One storage container (like a 2-liter bottle or 1-gallon jug).
  • Apple cider vinegar (enough to fill half of each container).
  • One apple.
  • Unchlorinated drinking water.
  • Filter floss or polyester fibre fill (stuffing for pillows and stuffed animals).
  • Hand towels.
  • Rubber bands.
  • Pipette.
  • Funnel (optional).

2. Cut the apple into thin slices that will fit through the container holes, then fill each container with four to eight apple pieces.

3. Distribute the vinegar eel culture starting in each container.

4. Fill the remaining containers with a mixture of 50% vinegar and 50% dechlorinated tap water until the liquid reaches the neck of the bottle. Leave a small amount of headspace in the containers for air.

5. Cover the holes of the container with a sheet of paper towel secured with a rubber band. This permits the vinegar eels to breathe while restricting the entry of pests. Keep the containers at room temperature and out of direct sunlight in a cupboard or on a shelf.


The wine bottle is your major culture for capturing vinegar eels efficiently. The bigger container is your backup culture in the event that the wine bottle is damaged. There is no need to feed backup cultures for a year or two if they are left alone. There should still be sufficient vinegar eels to initiate a new culture, even if the population decreases slightly.

How Can I Gather Vinegar Eels to Feed My Fry?

  • For the vinegar eel population to expand sufficiently so that you can begin feeding the fry, leave the wine bottle unattended for two to four weeks.
  • When it’s time to harvest, tuck a wad of filter floss into the neck’s base so that some of it is submerged in vinegar.
  • Fill the bottle neck with a little amount of dechlorinated tap water.
  • The vinegar eels will go through the filter floss into the fresh water to receive oxygen if you wait 8 to 24 hours.
  • Some of the vinegar eels can be taken out using a pipette and added to your fish fry.
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You may feed using this manner for a few days straight, possibly even up to a week, but eventually the culture will start to run low. As a result, if you have a lot of fishlings, prepare multiple bottles of vinegar eel cultures so that you may alternate between them. Allow each bottle to rest for four to five days in between feedings to give the culture a chance to repopulate.

How Can I Keep the Vinegar Eel Culture Alive?

The apple chunks finally decompose after six months, the nutrients are depleted, and you could notice the culture is considerably cloudier than usual. It is thus time to establish a new culture. Pour part of the old culture into a fresh container. Slices of apple and a new solution made of 50% apple cider vinegar and 50% dechlorinated water should be added to the remaining space in the new container. Your fresh culture should be ready for harvesting once more in two to four weeks.

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