
What are vinegar eels and what do they eat?
What Are Vinegar Eels? Vinegar eels are harmless, white roundworms or nematodes that feed on the microorganisms commonly found in vinegar and fermented liquids. Growing up to 50 microns in diameter and 1 to 2 mm in length, they are one of the smallest and easiest live foods to culture for baby fish.
What are the worms in vinegar called?
Vinegar eels are round worms we call nematodes and not actual eels. They feed on the live bacteria and yeast culture used to produce vinegar. Vinegar Eel. These free-living nematodes can be found in unfiltered vinegar and are often raised and fed to fish fry as a live food.
What are vinegar eels in kombucha?
What Are Vinegar Eels? Turbatrix aceti, also known as vinegar eels, are a type of roundworm. In kombucha, they feed on the yeast and bacteria culture. It can be quite unsettling to find in your jar of kombucha, especially if you have never encountered the 2mm worms.
How to feed Eels to fish fry?
After a couple of hours, the eels are going to want to reach the surface to breathe. At this point, you can use a pipette and suck up the freshwater and eels. This then, in turn, can be used to feed your fish fry. A pretty simple process. When you are done harvesting remove the wad and return the rest of the vinegar solution to your main container.

Where can I find vinegar eels?
Vinegar eels are usually present in raw vinegar that has been sitting around for a period of time – it's just naturally what happens with raw vinegar. Since any liquid with sugar in it can eventually turn into vinegar when exposed to air, acidic and vinegary kombucha is also susceptible these organisms.
Does apple cider have vinegar eels?
Turbatrix aceti (vinegar eels, vinegar nematode, Anguillula aceti) are free-living nematodes that feed on a microbial culture called mother of vinegar (used to create vinegar) and may be found in unfiltered vinegar....Turbatrix aceti.Vinegar eelsSpecies:T. acetiBinomial nameTurbatrix aceti (Müller, 1783)Synonyms10 more rows
What kills vinegar eels?
The chlorine or chloramine in most treated tap water will kill vinegar eels. If your tap water is not chlorinated, pipet 1 mL of household bleach (sodium hypochlorite solution) or isopropanol (rubbing alcohol) into the culture and wait 15 minutes before flushing down the sink.
What are vinegar eels good for?
What Are Vinegar Eels? Vinegar eels are harmless, white roundworms or nematodes that feed on the microorganisms commonly found in vinegar and fermented liquids. Growing up to 50 microns in diameter and 1 to 2 mm in length, they are one of the smallest and easiest live foods to culture for baby fish.
How long do vinegar eels live in freshwater?
As a breeder of both freshwater and marine fishes, I prefer them over microworms for one simple benefit: unlike microworms, vinegar eels can live in freshwater for an extended period of time (possibly up to a week) and swim in the water column where baby fish are feeding (in comparison, microworms sink and die quickly) ...
Are vinegar eels attracted to light?
So far they don't seem to be attracted to or want to avoid light. Tilting the container to wet the sides usually causes them to climb within ten minutes, but this isn't always reliable. If the secret to making them climb can be cracked, vinegar eels could supplant microworms as the food-of-choice for betta fry.
Does vinegar have worms in it?
Visitors reacting to the fact that unpasteurized apple cider vinegar is home to the creature, Turbatrix aceti, more commonly known as the “Vinegar Eel.” It's not that people mind eels, though these are not eels but free-living nematodes that are present in the environment, in soil, and in water.
Does ACV have worms?
Upon research I have found out that this tiny creature is called a Vinegar eel/vinegar worm (scientific name:turbatrix aceti) and it says that it is a non-parasitic nematode that is free living in vinegar solutions and harmless to humans. (However the FDA still does not allow it in ACV being sold?)
How do vinegar eels get into vinegar?
3:184:40How To Grow Vinegar Eels And Feed Them To Baby Fish - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd the more dense vinegar stays at the bottom of the vase. The vinegar yields need oxygen from theMoreAnd the more dense vinegar stays at the bottom of the vase. The vinegar yields need oxygen from the surface. So they swim up through the filter floss and into the freshwater at the top of the vase.
What is vinegar eels?
Vinegar Eels (Turbatrix aceti) are free-living nematodes that feed on the microbial organisms. They are found in unfiltered vinegar. Vinegar eels are used by fishkeepers to feed very small fish fry. These guys are very small and are best seen by shining a light through a clear container.
How to feed vinegar eels?
Make sure you have your flask, funnel, pipette, and floss ready. Place the floss into the middle of the tube and fill with water. The Vinegar eels will swim through the floss and stay in the fresh water. After a couple of hours, use a pipette and suck up the freshwater. This can be used to feed your fish.
How to get eels to breathe after filtering?
After a couple of hours, the eels are going to want to reach the surface to breathe. At this point, you can use a pipette and suck up the freshwater and eels.
What is the ratio of vinegar to water for eels?
The ratio of water to apple cider vinegar is 1:1 or 50/50. This along with a couple of slices of an apple in your main container are all that is needed to feed them.
How many babies do vinegar eels have?
Female vinegar eels have ovaries and produce eggs. A fertilized egg hatches in the uterus before leaving the womb. Vinegar eels give birth to as many as 45 babies every 8-10 days.
Is it easy to culture vinegar eels?
Culturing Vinegar Eels is relatively easy. However, you are going to need to have some supplies on hand to make the process seamless. After everything is set-up these cultures will last a lifetime and require little maintenance to boot! The first item you’re going to want to have is two different types of containers.
Is vinegar eel maintenance free?
Vinegar Eels are relatively maintenance free. Just make sure there are a couple of apple slices in the culture and you’re good to go! Out of all the different cultures that I have owned, Vinegar Eels are by far the easiest to maintain.
What is vinegar eel?
Vinegar eels are round worms we call nematodes and not actual eels. They feed on the live bacteria and yeast culture used to produce vinegar. Vinegar Eel. These free-living nematodes can be found in unfiltered vinegar and are often raised and fed to fish fry as a live food.
What is the origin of vinegar?
From the early days of Greek physician Hippocrates, vinegar is deeply rooted in history and comes from the French compound word “vin aigre” (sour wine). Today, besides being used for food, vinegar has many other uses:
Does vinegar kill worms?
They are about 1/16th of an inch (2mm) long and feed on the bacteria of apples, so apple cider vinegar is a great source of these yummy microworms. The good news is that vinegar eels are normally filtered or pasteurized prior to bottling and don’t make it into the meals of most consumers.
How to prevent vinegar eels?
The easiest way to prevent vinegar eels is to avoid raw vinegar at any costs. This applies both to your starter liquid as well as your scoby. If your scoby was raised in contact with raw vinegar (say from the person you received it from) your entire brew may be at risk of vinegar eels.
How to tell if vinegar eels are in kombucha?
The easiest way to detect vinegar eels is to take your kombucha to a dark room and shine a flashlight on one section of your bucha. Any worms present will begin to wiggle towards the light and you should be able to spot them easily. You will likely also be able to see them clumped on the surface with your naked eye.
What are worms in vinegar?
As I mentioned in the intro, they are microscopic, worm-like nematodes that are usually found in raw vinegar. They actually aren’t after the vinegar itself. Instead, they feed off of the bacteria and yeast that are used to produce the vinegar in the first place.
Does vinegar kill yeast?
The answer is no. I’ve done some research and I’ve found out that all vinegar is put through a pasteurization process that kills the bacteria and yeast once they’ve done their jobs. This cuts off the food supply for the vinegar eels and stops them from hanging out in almost all types of vinegar.
Can vinegar eels be worms?
While these are signs that vinegar eels may be present, they are also the symptoms of other things that have gone wrong during your brew. Don’t automatically blame worms. It’s best to check with the flashlight method to make sure. The best way to deal with worms is through prevention.
Is vinegar eel a parasite?
Technically, they are harmless and non-parasitic, but that doesn’ t mean we should ignore them.
Can baby fish eat apple cider vinegar?
They are typically around 1/16th of an inch long and feed on the bacteria of apples, so apple cider vinegar is a great source of these pesky criters. Because they are so small, they make the perfect food for baby fish. Thus, they are commonly grown at home to provide the first meal for newborn fish.
How long do vinegar eels live?
This is because female vinegar eels can give birth every 6-10 days to up to 45 young ones. These can live for up to 10 months, ensuring that you have a self-replicating source of fish food.
Why are vinegar eels so small?
Slower brewing rate. When the vinegar eels feed on the bacteria and yeast culture, they ultimately undo the existing symbiotic balance between the bacteria and yeast.
How to keep vinegar eels out of kombucha?
5 Ways To Prevent Vinegar Eels Getting Into Your Kombucha. 1. Avoid using raw vinegar as a starter. As we saw earlier, raw vinegar could be infested with vinegar eels. The eels are not after the vinegar but the yeast and bacteria culture that's responsible for producing vinegar.
What to do if you have vinegar eels in kombucha?
If you have discovered vinegar eels in your kombucha, then it is time to dispose of it and take measures to prevent the same from infesting the next batch. While some brewers usually use a fine mesh strainer to filter out the worms before consuming the kombucha, it's not recommended.
How to keep eels from rotting?
Mix in 3 parts apple cider vinegar and 1 part non-chlorinated water in a bowl and add one teaspoon of sugar, mix until completely dissolved. This will provide the required nutrients to keep the eels growing.
What temperature do vinegar eels need to be?
Vinegar eels are not picky and only require a source of food, oxygen supply, and optimal temperatures which are between 60 to 90 degrees F (15 to 35 degrees C). Use a clear plastic or glass container, preferably one with a wide circumference to increase the surface area exposed to air. 2. Prepare the culture.
Is a vinegar eel a worm?
As discussed vinegar eels, also known as Panagrellus redivivus, are worms. So vinegar eels and vinegar worms refer to the same species. They are nematodes (or roundworms). Nematodes are around 0.1 - 2.5mm in length. They are thin and live a variety of conditions, from saltwater to desserts.
Confined to a water droplet, nematodes displayed an ability rare in the animal kingdom
As vinegar eels (pictured) mob together, they synchronize their wiggling, which forms collective waves that cascade through the swarm.
Citations
A. Peshkov, S. McGaffigan and A.C. Quillen. Synchronized oscillations in swarms of nematode Turbatrix aceti. Soft Matter. Published online January 10, 2022. doi: 10.1039/d1sm01572a.
About Nikk Ogasa
Nikk Ogasa is a staff writer who focuses on the physical sciences for Science News. He has a master's degree in geology from McGill University, and a master's degree in science communication from the University of California, Santa Cruz.
How to store vinegar eels?
This allows the vinegar eels to breathe while preventing pests from entering. Store the containers at room temperature in a cabinet or on a shelf that does not get direct sunlight. The wine bottle is your primary culture that can be used for easy harvesting of vinegar eels.
How to feed vinegar eels to fish fry?
Use a pipette to remove some of the vinegar eels and feed them to your fish fry. You can use this method to feed for several days in a row, maybe up to a week, but eventually the culture will start to deplete.
How to harvest eels from a bottle?
When you’re ready to harvest, stuff a wad of filter floss into the base of the neck so that part of the floss is soaking in the vinegar. Gently pour a little dechlorinated tap water into the neck of the bottle. Wait 8 to 24 hours later, and the vinegar eels will travel through the filter floss into the fresh water to get oxygen. ...
How to make eels?
Gather the following materials: 1 Starter culture of vinegar eels (from local fish auctions or online sources like aquabid.com) 2 1 container with a long neck (like a wine bottle) 3 1 backup container (like a 2-liter bottle or 1-gallon jug) 4 Apple cider vinegar (enough to fill half of each container) 5 1 apple 6 Dechlorinated tap water 7 Filter floss or polyester fiber fill (stuffing for pillows and stuffed animals) 8 Paper towels 9 Rubber bands 10 Pipette 11 Optional: funnel
How long should you keep vinegar eel between feedings?
Therefore, if you have lots of fish babies, prepare several bottles of vinegar eel cultures so that you can rotate between them, giving each bottle four to five days between feedings so that the culture has time to repopulate.
Can vinegar eels be fed to fish?
Vinegar eels have many other advantages that make them ideal for feeding fish fry. Unlike banana worms and other micro worms, they can survive for several days in fresh water, they swim around in the water column instead of sinking straight to the bottom, and their wiggling motions entice babies to eat more and grow faster. ...
