Micro Worm LIVE Starter culture Micro worms are not really worms at all, but a species of nematode that make a great first food for many fish fry including bettas, killfish, and many more. These guys are very easy to raise, and maintain as well. Full care, and feeding instructions will be included with your order. You will receive a culture containing enough micro worms to feed right away, as well as keep your colony fruitful so that you will have a continued food source. Instructions for care of the colony will be included as well. Ground advantage shipping is included in the price.