Okay, the Fish/Fineas dialogues we've been seeing are taking place inside their shared skull. I get that. So Jon and Diablo and the rest have only seen Fish go from sweet to mean and back, possibly with a brief spell of glowing eyes.
So, let's see if I've got this right: Fineas has used the turtle/doomsday weapon to split himself and Fish into two separate entities, plus one more that apparently didn't get the immortality upgrade the others have.
Right?
How many "Fish" are Jon and Diablo seeing now? Two live (one with goggles he didn't have a second ago) and one dead? One live one with goggles and one dead one without? Just one live one with goggles (in which case their problems just got bigger)?