Learn how easy it is to attract and collect FREE fish food! Pot worms that can be found in your yard in the Pacific Northwest (BC, Washington & Oregon) make a great food for guppies, tetras, bettas and many other tropical and cold water fish! All you need is a few flat trays, some water, a turkey baster and small collection container. In the temperate rainforests of the Pacific Northwest they are available from November to April. I don’t know the latin name of these yet, but am searching for it. I believe they are a type of Annelid (segmented) worm. Will share it here when I find it.