The Premier Pet Fish Wesite - Established 1996

Grindal Worms

By Clint Norwood
Grindal worms are a tiny relative of the common earthworm. Much larger than microworms but only a fourth the size of the harder to keep Whiteworms. Grindals are about half an inch long and as big around as a piece of thread.
They make excellent live food for growing fry and conditioning breeder adults of smaller species such as Guppies, Tetras, Danios and Killifish. They are also greedily eaten by even bigger fish. All fish benefit from some live food in their diet. Grindals live and reproduce well at normal household temperatures, take up very little space and are easy to culture.

Culturing Grindal Worms

An active grindal worm culture
The worms surround a splotch of food
Toothpick for size comparison


Starting A Culture

Put up to an inch of potting soil into your culture box, give it a good squirting with your mister, wet it to about the same moisture content as freshly turned dirt. Punch a few small holes in the lid for ventilation. Add your starter culture.
Feed the worms about a half teaspoon daily of the baby cereal, increase this amount as the culture grows, but try not to overfeed (leftover food will spoil and fungus) give it another squirt of water to moisten the cereal. As you feed the worms, gradually spread the food out into a larger area of the culture as it grows.
When the culture is very heavily populated with worms you can start harvesting (usually after about 2 weeks). Harvest by wetting a small piece of plastic and sprinkling some of the worm food on it, the next day the plastic square should be covered with worms, you can then dip this into a cup of water, the worms will fall into the cup and can be fed to your fish. You can use a turkey baster or an eye dropper to dispense the worms.
Grindal worm cultures last for a long time and don't usually need to be re-cultured until the potting soil has soured or production has trailed off. When it's time to re-culture just harvest a few worm and repeat the above steps.

Grindal Culture, note worms on grid.
Grindal Culture, note the worms clinging to the grid.
I'm now handling the grindal worm cultures in a new and much more productive way. First, no more potting soil or peat moss, now Im using coconut fiber. The coconut fiber is less acidic and is much preferred by the worms. Also since the coconut fiber lasts longer without going bad I'm now feeding the worms fish flake food, specifically color food, instead of the less nutritional cereal based foods. This in turn gives the fish a more nutritious meal with the worms. Notice also in this picture the small piece of grid. Thats cut from a large "needle point" matt that you can get at any Walmart or crafts store.
The harvesting method now is to dip the plastic grid into a cup of water, this makes the clinging worms fall off and wets the grid. Now I sprinkle the wet grid with the food and put it back on top of the fiber. No other water or food needs to be added. I can now go around to the fish tanks and dispense the worms to the fish.
Easier, faster and much more productive. Image

Articles Index / Live Foods Index
This article has been viewed 11898 times

Site Index / Articles Index / Product Reviews



Cash Us On:

FacebookVisit PetFish.Net On Facebook YouTubePetFish.Net Videos On YouTube TwitterVisit PetFish.Net On Twitter Google PlusVisit PetFish.Net On Google+ RedditVisit PetFish.Net On Reddit PinterestVisit PetFish.Net On Pinterest

How Bou Dah?


PetFish Index
About Us
Contact Us

All Articles Index

The Fish
Barbs, Tetras And Minnows
Catfish and Loaches
Freshwater Sharks
Goldfish, Ponds And
Coldwater Fish

Killifish Care
Killifish Species Profiles
Miscellaneous Fish
Native USA Fish
Saltwater And Marine

Other Fauna

Aquatic Plants

Aquarium Basics
Foods And Feeding
Live Foods
Diseases And Fish Health
Spawning And Fry Care
Fishy Fun Stuff

Do It Yourself
How To Guides

Products And Services Reviews

PetFish Video

Our Free Ebooks

Conversions Volume Calculator

Aquarium Measurements And pH Scales

The Ultimate Aquarium Calculator

Made with Aquarium Designer
Design Your Aquarium

Link to

Translate To

© Since 1996, PetFish.Net All Rights Reserved
All content is copyright by and/or the named author and may not be used without written permission.
Privacy Statement - Contact Us - About US - Links - Site Map

Sponsored In Part By