The invention relates to a fish feeding device for small fishes. The lower end of a charge
pipe is fixedly connected with a taper
rotating disc, the upper end of the charge
pipe is vertically arranged in a support in a hanging mode through a shaft sleeve, a hopper is arranged at the upper end of the support, the hopper, the taper
rotating disc and the interior of the charge
pipe are communicated, the charge pipe is provided with a first gear, a second gear matched with the first gear is installed on a first motor, the first motor is vertically arranged in the support in a hanging mode, a roller is arranged on the inner wall of the taper
rotating disc, the bottom wall of the support is provided with an opening, a hinge pin is arranged on the inner wall of the lower end of the support, a taper
rubbing disc matched with the roller is installed at the upper end of the hinge pin, and the taper
rubbing disc is provided with clearance holes. According to the fish feeding device, by means of the action of the roller and the taper
rubbing disc, granulated fish feed is ground into
powder, and the small fishes can eat the feed conveniently; meanwhile, the scattering area of the feed can be increased, the fishes have enough space to eat, and the device is simple in structure and convenient to operate.