A multi-stage rationed feeder for ornamental fish, comprising a container, a container cover assembly and a measuring cup assembly. A falling-material receiving cover of the container cover assembly is adapted to a container cover, and a buckle position is buckled into a container cover snapping slot, such that the falling-material receiving cover is rotatably mounted and connected to the container cover. The measuring cup assembly comprises a measuring cup and a blocking slice. One end of the blocking slice is provided with a sleeve hole for sheathing a blocking slice pin. A pin groove is adapted to a falling-material receiving cover pin snapped into the pin groove such that the measuring cup assembly is removably mounted and connected to the container cover assembly from below.
