A catcher for catching crabs, shrimps or the like includes a flexible frame and a net cover housing the flexible frame. The flexible frame is deformable between a retracted configuration and an extended configuration. The net cover has an inlet tunnel with a cross-section area inwardly and gradually decreased. When the flexible frame stays at the extended configuration, the net cover is supported by the flexible in such a manner that an accommodation in which baits can be provided is formed inside the net cover.
