Crawfish can be found in muddy holes on the edge of a stream or pond, either above or below the waterline. They can pinch quite well.
Crawfish are usually boiled whole, often with boil seasoning in the water. Most of the meat is in the tail and head, but some meat may be sucked out of the claws.
Crawfish can be caught from many fishing spots around Geilinor but mainly in beginner areas such as Lumbridge and Draynor.
They can be caught using a Crayfish Cage which is bought in the Lumbridge fishing store for 20gp or from the Grand Exchange for, on average, 24gp.
You only need a fishing level of 1 to catch Crawfish so it is a good catch for beginners to level up their fishing skill.