The condition of the fish Sal is chopping up changes from one scene to the next, going from beheaded, to intact, to sliced, etc.
The fish on the cutting board change from one fish to two fish.
Sometimes beheaded sometimes not.
Sometimes the head is on the cutting board and sometimes not.
When Sal offers Monk and Sharona some scungilli, Stottlemeyer and Disher, sitting in a nearby van, hear it over Monk's wire. Stottlemeyer explains to Disher that scungilli is octopus. That is incorrect. Scungilli is an Italian dish made from the meat of a mollusk or conch.
When Monk is summarizing the case on the bench with Sharona and Phil, Sharona says "We did a little research" but her lips don't move. (This may be only visible on the Widescreen version)