the invention concerns a device for processing fish and introducing the same into cans . it is characterized in that the fish are placed in alternating alignment in threes or fours in troughs of a conveyor which comprises one middle trough element flanked by two outer ones and whose support surface comprises a base plate raisable and lowerable by the force of a spring . the fish brought onto the base plate are guided to a cutting device which cuts out the rump pieces of the fish and which is adjustable with regard to the desired fish length . subsequently they are gutted by the use of low pressure . the transfer of the fish into the cans held ready in time with the troughs occurs in the lower run of the conveyor , maintaining the packing pattern predetermined by the introduction into cans by lifting the base plate . in that process the can supply is monitored such that each can is only confronted with a full trough .