A fillet knife (also called a filleting knife) is a kitchen knife used for filleting. Trout can be cooked as soon as they are cleaned, without scaling, skinning or filleting. This includes such things as fish filleting, salting, drying, smoking, cooking, freezing and canning. All butchering and filleting is done in-house. The filleting process of the fish starts after the pretreatment and trimming stage. In some fish companies, fish filleting is done manually. In certain fish processing industries, filleting is done manually. Fish filleting is either done by mechanical filleting machine or by hand. In preparation for filleting, any scales on the fish should be removed. In preparation for filleting, the scales on the fish should be removed. Aside from the food, the principal attraction is a whole tuna filleting show. The byproduct of the filleting process was used to produce the Roman delicacy of "garum". All six lakes have a boat launch, and four of them have filleting stations. It gives good control and aids in filleting.