This is a starter culture kit of vinegar eels. This is a unique way to keep them. They are normally found in straight vinegar. These are in instant potatoes. They are a must have in killifish breeding. They are one of the first foods the fry can eat. This kit comes with a starter culture of vinegar eels, culture container, instant potatoes and apple cider vinegar. 50% water and 50% apple cider vinegar added to the instant potatoes mixed with starter culture and you will be able to harvest within 24 hours. Worms are harvested off of the side of the container with a paintbrush, your finger, or a Q-tip.