I've been releasing the same kind of fish lately when I've been fishing for steelhead. I have always thought they were jack kings, and voted the same way. Wish we could see the tail, and also if you caught a jack silver and laid it next to it you would see the difference clearly.

I also know the river that TBJ is talking about, or one just like it . . . and have caught those wierd jack things while fishing for winter fish. They are built like footballs, and look just like little kings.