Fish trapped in pots is a traditional fishing technique used by many cultures around the world. It involves using a pot or basket-like structure to trap fish, usually made of woven materials such as wicker or bamboo. Eels are one type of fish that can be caught using this method, as they are attracted to the bait inside the pot and become trapped when they enter. This method of fishing is still used today in some parts of the world, and is an effective way to catch eels.