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Live food cultures II

I have acquired quite a few different cultures gradually, and some work well for me and some don't.  These are the ones I have kept going, some better than others.  My favorites are the BBS, microworms, and grindals, because these are easiest for me, and I feed them to my fish daily.   In order of size, smallest to largest, they are:

Vinegar Eels
Microworms
Baby Brine Shrimp
Grindal worms
Grindal worms on green scrub pads
Daphnia
Daphnia vs Moina
Confused flour beetles
White worms
Livebearer fry
Red Wigglers
Snails

I discuss my experiences with each below, and I've included some more web resources here.   I also have some notes from fellow MASI and SLAKA member Jack Heller, a master breeder of killifish, on how he does some of his live food cultures, including paramecia, white worms, and fruit flies, here.  And I continue to envy Charles Harrison's cool basement that allows him to keep thriving cultures of white worms year round--see his setup for those here.

For truly in depth information on culturing these and many other live foods, there is now a terrific, up-to-date resource by my friend Mike Hellweg, a master fish breeder and fish keeper who has just written a book on the subject.  You can reach him here to find out how to get a copy of his Culturing Live Foods.  I've learned a bunch from my copy already, and am going to change some of my formulas to reflect this new information.  He discusses all of the foods I have here in more depth, plus many smaller, larger, and some just plain finickier than I have been able to keep going.  This book is also a primer on spawning fish--just because the discussion is framed as culturing them as feeders for other fish doesn't mean the tips and strategies mentioned are any less applicable to breeding a wide variety of desireable fish.  That's a lot of great info for one book.

Vinegar Eels

The newest addition to my collection of critter cultures, these are supposed to be small enough for even tiny rainbowfish fry.  You can't really see the individual worms without magnification, but they make the water cloudy when they're doing well.  They also have the advantage of swimming throughout the water column, which is important for those small fry that live near the surface. 
But although these are supposed to be very easy to keep--able to survive long periods of neglect--but they can be killed.  They are called "vinegar" eels but they prefer a 1:1 dilution of vinegar (I use apple cider vinegar and tap water).  They do well with some peeled apple slices (to avoid bad effects from any sprays on the skin of the apple, which can kill them) or a teaspoon of applesauce in a pint of culture, with a small spoonful of sugar stirred in.  They're very easy to keep alive, although they can be killed by (1) unpeeled apples (2) drying up of the culture (3) mold on an overfed culture (and you can probably find a few more if you're creative).  

Though to the naked eye they appear mostly like specks of dust in the liquid, up close they're proper worms indeed:

eels

Here they are in their new culture with some fresh cut peeled apples:

apples

And the apples will soon break down into mush like that on the bottom of the jar.  They will stay in this wide-mouthed jar, coverted with a bit of fabric to keep out the fruit flies:

covered

Jack Heller likes to harvest his by pouring them through a coffee filter, flipping the filter over into a dish of water, so that the eels fall into the water, and uses a dropper to feed them to fry.  Another technique is to use a long necked bottle, fill it with the eel culture partway up the neck, then stuff in a piece of filter floss, cover with water, and wait a few minutes for the eels to migrate up into the water (this keeps vinegar out of the tank, but avoids the need for filters).  I will try out both harvest techniques if I can get them established.

Fortunately, there seem to be 
plenty of infusoria in my planted tanks to get the littlest fish started just fine; I've even had a little pseudomugil rainbowfish appear spontaneously in one of them. 

Microworms and Walter worms

Update coming soon....after reading a very interesting article about these in the Journal of the American Killifish Association, I tried these on potato flakes for the first time a few weeks ago, and they're doing great.  I am quite impressed, and all the new cultures I've started are now on potato flakes.


These are very small, but at 1-2 mm long, are visible as tiny threads in the water when you feed them to your tanks.  The fry of most fish can take these soon after hatching:  they're considerably smaller in diameter than even newly hatched baby brine shrimp.  They do fall rather quickly to the bottom of the tank, though, so top swimming fry may not get enough of them.  I've had two different varieties that are available locally, and now only keep so-called "Walter worms".  These are a type of microworm that spend more time in the water column before they sink than do regular microworms (click here to see an experimental demonstration of the difference).


I cultivate these on a mix I learned from Al Andersen's talk on live foods at the MASI show in 2003:  gerber instant oatmeal or mixed grain cereal plus a bit of brewers yeast plus a little instant dried yeast (about a pinch of instant yeast plus a tablespoon of brewers yeast to a cup of cereal).  I think the worms are supposed to eat the live (activated) yeast, which feeds on the cereal and brewers' yeast.  I make this up in bulk and just add equal parts mix and water to a clean dish, so that it is a thick paste like this:

microwormbatter

I place a dollop of this in a small plastic container, and add a few drops of liquid from an earlier culture.  As the culture matures, it will get thinner and darker , and that is normal.

After reading a very interesting article about these in the Journal of the American Killifish Association, I tried these on potato flakes for the first time a few weeks ago, and they worked great, but the smell got nastier quickly, so I have gone back to the baby cereal.  I now do it simpler and add the cereal mix to the container and water to that, without using an intermediate step of mixing it up in bulk in the bowl.

After about a few days to a week, the worms start crawling up the side of the containers.  The cultures are harvested daily by wiping the worms off the side of the container with a finger and kept going until the yields drop, usually for about 3 weeks.  I looked through the cheap disposable containers at the grocery store to find some that I could stack in a small container, because the easily harvestable worms come from the sides of the container, as here above the red line:

microworms closeup

where I rub them off daily with my finger to feed the fish (you can use a rubber scraper or a popsicle stick for this part if you're squeamish, or your hands are dirty):

worms on fingers

There are more worms living in the lower part of the culture, but harvesting them leads to putting a lot of cereal debris in my tanks.  So I prefer to use multiple small containers, here trying to get the maximum amount of side-wall surface for harvesting.  Yogurt containers and margerine tubs are often used, but I found some little disposable cups that fit stacked in a box so they're easy to handle.  I poke holes in the lid with a pushpin for air exchange, but be sure the holes are small or fruit flies can find their way in (very very messy).  These worms do fine, by the way, whether they are kept in a light or a dark place.

under sink

After swiping the wall of the container, I swirl my finger in a clean cup of water.  Then I rinse the worms through a brine shrimp next to get rid of the cloudy cereal debris.  I swirl the containers daily to recoat the sides of the container after I take off the worms, which seems to encourage the worms to climb up the sides for easy harvest.  When the culture turns darker and fewer worms come out, despite being stirred/swirled daily, I dump it and start a new one, usually every 2-3 weeks.  There are typically 2-3 fresh, 2-3 medium, and 2-3 older cultures going at any one time, and still I don't get very many worms at once, but fortunately the little fish that need these don't need a lot of them to grow .

Walter Worms

Sometimes a little skin of yeast or bacteria grows on top of the culture, but does not harm the worms, and the flakes of it that end up floating on top of the water are easily poured off before the worms are poured into the net for rinsing:

filmy worms

If you don't see lots of worms on the side of the container, don't despair.  They're probably still in there.  If you swirl the culture and look at the surface closely, it should look like it is moving or bubbling, like this:

bubblingworms

Looking a little closer up (this requires a magnifier) you start to see the individual worms swimming at the surface
:

closeup microworms
 
And here they are climbing up the wall of the culture:

wirns ib wall

Jack noted that stirring some puffed rice cereal (not rice krispies, but puffed rice) into an older microworm culture can keep it going for weeks more. 

BBS


Newly hatched baby brine shrimp are a favorite not only of small fry, but of most fish up to a couple of inches long.  They're active swimmers, dispersing throughout the water column, and survive for hours after being added to a tank.  I do these differently than most, because I don't use air pumps at all in my fishroom (which is my living room, and the live food area is my kitchen too).  I hate the noise they make (yes, I know the new linear piston pumps are very very quiet, but even so....). 

Brine setup

I hatch brine shrimp eggs daily in a 2 liter flask, set on a magnetic stirplate.  Each night I add 1L of room-temperature tapwater to the flask and 1/2-1 tsp brine shrimp eggs (depending on how many small fish there are to feed).  2-3 drops of bleach may be added per liter to prevent the growth of unpleasant bacteria, and since bleach is used to dechorionate the eggs to increase hatching, I suspect it may help hatch rates used like this as well.  The flask is set to stirring overnight on medium speed, enough to see a little whirlpool vortex in the middle of the liquid.   Stirring needs to be fairly vigorous for good aeration.

brine vortex

The next morning I add about 1 1/4 ounces of pickling salt. I keep the salt in a jar next to the stirplate and flask, and keep a scoop in it that is just the right capacity.  It's all about making it easy to remember even when I am sleepy stupid in the morning.

Some people think the type of salt makes a difference: most use non-iodized salt, some people like rock salt or road salt, and Jack Heller even adds a bit of epsom salts to his along with the rock salt.  I use the pickling salt because the three-pound box is a convenient size for me to store.

At night I pour the contents into a 1 liter fat-separator measuring cup (the spout comes off the bottom) and leave it sit for a few minutes while I harvest the microworms and feed the grindals. 

Ready for harvesthttp://debunix.net/fish/CharlesLiveFoodCulture.html#CharlesShrimpHatchery

Then I pour off the hatched BBS from the bottom and leave the top-floating unhatched and empty shells in the separator.  And I set up a new flask for the next night's BBS.  I use two flasks in rotation to let one dry while the other is in use, and this keeps down the smell.  When they get a nasty film on the sides, a dilute bleach solution and rub with a bottle scrubber will clear it right up.

I don't know what my hatch percentage is, but I get reliable BBS production on a 24hr rotation and that works for me and my fish.  I may also be feeding some bad eggs, that hydrate but don't hatch, and sink; this reportedly can make fish sick.  I haven't noticed any problems with my fish.  Overfeeding BBS encourages the proliferation of hydra.  This has given rise to the idea that hydra actually exist in the cans of brine eggs, and hatch out with them, but to the best of my knowledge and that of my sources this is not the case.  The hydra may come along with live plants or fish or gravel, and the BBS are a terrific food for them, so overfeeding encourages the proliferation of hydra that were already in your tanks.  BTW, a bit of fluke tabs quickly takes care of the hydra, so they don't harass or kill your small fry that are supposed to be eating the BBS.

More common setups to hatch BBS are designed to use airstones for vigorous aeration, and are setup so you can turn the air off, let the hatched nauplii settle to the bottom of the culture, then pour off directly from the bottom, or use a baster to suck them up without bringing along the empty floaters.  They are also drawn to light, so a setup incorporating a light at the bottom will help separate them from their shells.  I used to keep a light on over the culture 24/7, but have since discovered no change in the hatching rates without it.  I have some pictures of Charles Harrison's brine shrimp hatchery here.

Grindal Worms

I love the grindals because they like normal room temperatures, unlike white worms that need it cool (I hate the idea of running even a small refrigerator just to keep it cool for the worms to feed the fish).  I grow them in small plastic boxes, as shallow as I can get (you're really growing them only on the top surface, so deeper boxes just take up more room without providing more worms).  I have a small rack (purchased with some little "drawers" from an office supply store, drawers discarded, that allows me to stack several in a small space) that holds several of them under the sink (they prefer the dark), and can stack more on top as needed, giving me enough growing surface to produce more grindals than all my fish can eat. 

rackOWorms

Each box is filled with half an inch to an inch of Magic Worm Bedding (Magic Products Inc), kept quite moist.  I use this bedding for my worm compost bin, because it seems to keep the redworms happier, so I always have it on hand.  Other people use various soil or peat mixes, or go dirtless with sponges or green plastic scrubbies.  I trim the lids of the boxes off on two sides so they fit inset into the box, on top of the worms and their food, but cover most of the box.  The more of the surface you cover with the lid, the more of it you can actively use for harvest.  The edges of the lid that remain provide a convenient handle, and the plastic lid is easier and safer than the piece of glass that is often recommended:

view of lid

The boxes are loosely wrapped in a plastic bag to keep out fruit flies

worms in bag

Each evening I take off the lid,

worms on lid

return any visible pellets of catfood (like this in the middle of this closeup) to the box

worms on lid close up


and wipe the worms off into a dish of tap water:

cleaning

The worms are swirled around and allowed to settle, the water poured off, and new water added, and rinsed this way several times while I'm also thawing the frozen food and preparing the brine shrimp and microworms.  By the time I'm done they are much cleaner and ready to be dropped into the tank from my miniature baster.  The box of worms gets a few fresh pellets of cat kibble.  I started with Science Diet feline maintainance light, since that's what I fed to the cat, but I have recently learned that kitten food may be better because it has more vitamin C that will eventually get passed through to the fish.  However, the Science Diet kitten food molded too easily, and the worms did not seem to swarm over it as readily, so I have switched to Purina Kitten Chow, which seems to work a little better.  Here is the fed culture ready to be covered, wrapped, and put away:

fed

Alternative foods for grindals include trout chow, other fish food, baby cereal, or soaked slices of bread:  they're really not very picky.  But the kibble is clean, easy to use, keeps them up on the surface for easy harvest, and resists mold better than baby cereal.

All my fish love grindals, and I love getting a couple of tablespoons of live food daily from a bit of cat food and a small investment in space.  And I have not had to restart the cultures very often--they've gone about a year between restarts; if I add too much food and some molds (rare but it does happen), I remove the moldy bit and the culture goes on; if it gets a little too wet, a few days with the bag loosened dries it out a bit; if I leave on vacation I just let them go in their bags until I get back (refrigeration was a bad idea:  the worms died and it was nasty). 

I recently discovered what seems to be a really good way to start new cultures:  I take the cleaned, rinsed worms when I have some extra, pull them up in the baster, and let them sit in the baster until they sink into a sludge about to fall out of the tip.  I put a few drops of this concentrated mass of worms over a fresh piece of kibble in a new container of fresh, damp, worm bedding.  There is a good ratio of worm to food right away, so the culture starts without a lot of moldy kibble or hungry worms trying to find their way to the new food.

Plastic shoeboxes are also popular to keep grindals, but beware that loose-fitting lids invite fruit flies.   Another unwelcome visitor to grindal and white worm cultures are springtails, tiny little bugs that look like little white specks on the surface of the culture media.  When they invaded my white worms (possibly coming from a bag of poor-quality peat I used for the bedding mix), they quickly took it over, despite attempts to flood and freeze the culture to kill them off (but spare the worms).  With the grindals, I found that they seemed to outcompete the springtails, without any special treatment.  I saw a few springtails, then a few more, then they gradually disappeared over a few weeks.

Grindals on scrubber pads

After an outbreak of mites in my grindals, which recurred after I subcultured them very carefully trying to avoid carrying along any worms, I tried some "soiless" cultures on green scrubber pads.  These are now going great guns and the mites have not entirely vanished, but are remaining at a low, manageable level.  I also switched from using plastic bags to an old pillow case to seal out the fruit flies, which also is working quite well.  These  cultures are much slower to get established, and respond to overfeeding with impressively nasty molds if you're too enthusiastic--daily feedings are best, just enough for the worms to eat within 24 hours.

Here is the stack o'cultures in the pillowcase:

pillow case

And what it looks like inside:

stacked

Baring the worms:

worms revealed

And this is what the culture looks about 8 hours after feeding:

fed culture

And the worms on the lid are ready for harvesting with a swipe of the finger:

worms on lid

The goop at the bottom may be where there are freshly hatched worms, so maybe it shouldn't be thrown out:

goop

And you can make a little more of that by periodically rinsing the culture pad with a little tap water (not dechlorinated).

This is the dense, well-established culture:

well-fed

And this is a new culture, only about 2-3 weeks old, given new blobs of worms and dampened kibble, little by little, only feeding as much as it will eat overnight.  It takes many weeks to build up to a well-established culture like the one above.

new cx

I have not been raising them on the pads for that long--about 18 months now--and don't have clear criteria for splitting or renewing cultures.  Gradually increasing the number of kibbles fed daily--again, only as much as the worms will eat--is a very slow but safe way to get them to the size and productivity of the very well established culture shown above.  

I think I got much faster establishment recently by a different technique, and I will try this again in the future.  The cultures are generally 3-5 pads thick, and when my best-established culture got overwatered, and started to smell of decaying worms, I removed a couple of the middle pads, rinsed them under the tap (gently, trying to remove some of the foul smelling muck but not let all the enmeshed worms escape), and switched it out with a clean pad from the just-started cultures.   All three cultures did well after this.

Overwatering is a problem with these cultures, as is drying out on hot dry days.  I generally add a little water to the bottom of the cultures daily after I harvest and feed them--just enough to keep the bottom quite wet and have a little water that will puddle if I tip the culture on end a bit, but not enough to immerse the entire bottom of the culture box in water.  If they do get overwatered and  a little moldy, pour out some of the excess from the bottom of the box.  Feed very sparingly, and give them time to come back.  They have come back amazingly well if I give them time.

White Worms

I gave up on these because my apartment was too warm for them (temps easily to 80 degrees in the summer even under the sink), and I could keep them going but never really thriving, whether I used synthetic sponges or dirt with ice packs in a cooler (and then I discovered grindals, which do thrive here).  Many people who keep them have cool basements or use a refrigerator or wine cooler set to about 55 degrees F.  Another alternative I just learned about from Jack Heller is to cut off the lower half of a 2 liter plastic soda bottle, fill it with water, and freeze it.  That block of ice, if placed in a standard styrofoam fish box, in the middle of a few inches of worm bedding, will take 2 days to thaw, at which point it can be replaced with a freshly frozen block of ice.  It gets too cold right next to the ice for the worms, so they hang out a few inches away from the ice block.  They're otherwise cultivated just like grindals, although some people grow these up on a much larger scale.  Some images of Charles' Harrison's white worms are here.  They are reputed to be fattening, so are not recommended as a daily dietary staple. 

Daphnia

I keep a few going in a set of open trays on a windowsill--in shallow water, figuring that without filtration or aeration, my carrying capacity is limited by surface area.  I used to just toss them a pinch of dried brewers' yeast or a bit of baby food sweet potatoes every few days, and change their water with aged tank water when I do tank water changes.  I did not get many daphnia out of this--just a few dozen here and there as a treat for favorite fish.  But it kept them going until I saw the light:  during Joe Fleckenstein's talk on live foods at the 2005 MASI show, he said he used a little bit of everything he'd heard people used to feed them, including, most intriguingly to me, paprika.  So I went out and got several things he mentioned--soy flour, spirulina powder, and yeast from the health food store, a big jar of paprika from the international grocery, and (my own inspiration, no blame to Joe) some freeze-dried peas, also from the health food store.  I put all that you see here together--thats 180g or about 6 oz of spirulina powder, 1 pound of paprika, a 3.5 ounce container of the peas, about 4 ounces of soy powder and about 4 ounces of brewer's yeast.  Again, the proportions were simply what I bought of each one, and not specifically Joe's recipe.  I bought a big jar of paprika, so there is a lot of pepper in my version.

DaphniaChowIngredients

I whirled these together in the food processor (with a towel wrapped around it to keep from pepper-spraying myself) until the peas were powdered and all well-mixed.  I put it in a spice jar and sprinkle a bit on the daphnia daily.  I have seen an incredible increase in daphnia yield under this new regimen--so many that I suspect one of my trays actually crashed from overpopulation because I wasn't harvesting them fast enough. 

Here are happy daphnia in their trays on the windowsill:

daphnia trays

I keep them on the windowsill because it's a handy surface; they have also done ok in a closed closet for a time.  Light is not necessary.  The culture gets mucky on the bottom, but that's ok as long as it doesn't get stinky.

Daphnia Tray

I use a baster to harvest them.  You can see how they cluster in the corners of the tray above.  I put the baster there to avoid the mulm from the bottom of the tray:

harvesting daphnia

And I replace the liquid I remove with water from the tanks, because they're supposed to prefer to live in aged tank water.  I never give them freshly dechlorinated tap water, only water from my tanks.  They seem to flourish a little more in the water from my "hard water tanks" which is St. Louis tap water supplemented with a bit of SeaChem LiveBearer Salt.  I top them up at least once a week with tank water, and when the culture starts to stink, once every few weeks to a month, I drain the entire culture into a brine shrimp net, along with whatever goop is on the bottom of the box, and rinse it back into the box with tank water--in effect, doing a 100% water change, but with aged tank water.  I think I have daphnia pulex, which are all caught by the net, but Moina macrocopa (often incorrectly called Daphnia moina) are preferred by many fishkeepers because the newly hatched babies are smaller than baby brine shrimp--great for small fry--but require different feeding techniques because they will slip through a standard commercial brine shrimp net. 

daphnia.

The fish are quite pleased by every feeding of daphnia.  Although in theory they could survive in the tanks for days, they never last very long before the fish chase down every last one of them.

One neat idea for making the best use of daphnia comes from Jack Heller, who calls them excellent "babysitters" for young fry.  If you have to be out of town for a few days, putting some daphnia in the fry tanks helps keep the water cleaner, as the daphnia filter feed on some of the tank waste, and they also will produce babies that the fry can eat (assuming the fry are too small to eat the adult daphnia).  Add a couple of ramshorn snails and your babysitting crew is complete--they will help produce infusoria from the fish waste that the daphnia will eat.

Daphnia vs Moina

Adult Moina, a similar animal from a different genus than Daphnia, are the size of juvenile Daphnia, and juvenile Moina are smaller than newly hatched brine shrimp.  I recently got another starter culture of Moina because the very small juveniles should be excellent for fry.  They're so small that they don't have enough density of pigment in their bodies to appear orange to the naked eye, as the Daphnia do, and they're about the same size as the cyclops that sometimes contaminate and can take over neglected Daphnia cultures.  But though the both critters pretty much look just like white dots to my eyes, Moina swim like Daphnia--jerky short almost random-walk movements--and the cyclops are supposed to swim in a smoother steadier motion.  A closer look at the cultures (the best resolution I can get until I find my macro extension ring for the camera) reveals that the Moina do look just like juvenile Daphnia, and up close, they have an orange cast just like the Daphnia.

Here are the cultures shot side by side (identical scale:  the adult Daphnia are about 2mm long).  
The arrowheads point to Moina in the right image--hard to see, of course, but easier to make out if you view the image larger here, and to a similar appearing juvenile Daphnia on the left image.
Daphnia vs Moina culture

Here they are in more detail, at the same scale for both the larger images and the inset closeups:
daphnia vs moina up close

daphnia moina

daphnia vs moina again

Confused flour beetles


I keep a few of these in a covered drum bowl in my closet with some whole wheat flour.  They're covered because I don't want them to make their way to my kitchen and start eating my wheat and flour. 
beetles in drum

It is not easy to separate the beetles from the flour, so they mostly sit quietly and unbothered by me in the closet.   Occasionally I grab a strainer and sift a few out to sprinkle into the tanks, where the fish enjoy the treat.  They need whole wheat flour--white flour doesn't have enough nutrients to keep them going in any dense, useful quantity.  Once I thought I could cleverly recycle some stale gingerbread cookies made with whole wheat flour as crumbs for the beetles, but the spices didn't agree with them and the large crumbs made it harder to separate out the beetles.  That was dumb.  They get straight whole wheat flour only now. 

These beetles are well armored, and are best suited as food for larger top feeding fish.  If you dig a little deeper in the flour you can harvest a mix of larvae and beetles, and the larvae are more appealing to many fish.

confusedFlourBeetles

They're called confused because they were confusing to taxonomists trying to classify their species many years ago, but the beetles are quite clear about eating and breeding and otherwise doing their thing.

Endler's livebearer fry

Since I have a few of these fish in most of my tanks, there are nearly always a few fry available to supplement the diet of the other fish, if they're hungry enough to chase them down.   They're live food by default, not really by design.  This also has the pleasant side effect of keeping the Endler population under control; they're not known as "Endless livebearers" for nothing.

Red Wigglers (earthworms)

I keep a bin of redworms to compost my kitchen scraps.  Occasionally the fish get a treat of some fresh chopped worms.  Recently I tested a rolling vegetable mincer vs my regular cleaver to see which most efficiently chopped the worms, and the cleaver won hands down because the mincer was too dull and didn't cut cleanly through the worms.  For just a few worms at a time for my largest fish (smallish throrichthys cichlids), I just rinse them and pinch them off between my fingers into 1-inch chunks.

I learned most of what I know about vermiculture from Worms eat my garbage, which is available here, and from the forums at HappyDRanch, from whom I ordered my Can O' Worms.  I use Magic Worm Bedding here too with good success.  The bin sits in the kitchen and doesn't stink.

Snails

My planted tanks produce an abundance of snails, mostly ramshorns, and when I was keeping goldfish, I’d toss the excess in their tanks, and they rarely hit the bottom of the tank before being snapped up.  Loaches also love them (although my present dwarf Sidthimunki loaches don’t seem to eat them), and so did my adult Thorichthys cichlids.  Many fish that are too small to take on whole snails will be delighted if you crush the snail shell and toss it back in the tank. 


More Web Resources

Some good web resources for more information on culturing live foods:

In case you missed the first link, this is where you can get Mike Hellweg's book Culturing Live Foods

The Bug Farm website discusses which foods for which fish as well as culture techniques

The American Killifish Association Beginner's guide has a good section on live foods

The Krib discusses an extensive variety of live foods

The Live-Foods list
is not very active but seems to be pretty good

The Killietalk archives include many good threads on live foods

Notes from Jack Heller on live food cultures, including paramecia.

Some images of Charles' Harrison's live food cultures

Magic Worm Bedding is available by telephone or mail order directly from the company, but not yet available directly online.

And, of course, your local fish club is usually a great source of starter cultures and helpful people who know enough to generate excess cultures to give you a start.


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