Abstract: An inexpensive, portable device for filleting fish is provided which has a pair of flexible, side-by-side rollers that bow outwardly in opposite directions to engage the sides of a fish therebetween. The rollers have a plurality of spaced protuberances that firmly grip the fish, yet the rollers have sufficient resiliency to maintain the vertebral column or "backbone" of the fish in perfect alignment with an elongated opening between a pair of downstream, side-by-side, elongated blades. As the rollers are turned to advance the fish, two opposite fillet portions are cut by the blades as well as a narrow, bony, vertebral portion, and the blades are closely adjacent the rollers such that guide means or manual positioning is unnecessary. Preferably, the blades either reciprocate as the rollers turn or, in another embodiment, are mounted on an endless belt similar in nature to a band saw.