A stand-alone filleting machine for head off trout for from 1kg to 3.5kg. Like the FR-200 the FR-3500 incorporates a gutting system in the machine. The FR-3500 uses Pisces 6 blade backbone removal system and PLC controlled rib removal. This provides higher yields on a trout I larger than 1kg. The PLC controlled rib system give the option of removing the white belly fat from the fillets.