To provide a simply-configured fish species identification device. A fish species identification device includes: a light source (40) that irradiates a fish body (20) conveyed on a conveyer (10) with near-infrared light and white light; a CCD camera (50) that images, in order, a monochrome image (G1) of the fish body (20) irradiated with the near-infrared light and a color image (G2) thereof irradiated with the white light; and an identification processing unit (60) that, by obtaining a feature quantity of an outline of the fish body (20) from a monochrome fish body image (20A) within the monochrome image (G1) and a feature quantity of a color pattern thereof from a color fish body image (20B) within the color image (G2) that are obtained through imaging by the CCD camera (50) and by checking these feature quantities with a feature quantity of a plurality of registered fish bodies, identifies the feature quantity of which registered fish body is the closest to the feature quantity of the fish body (20).
