I may be wrong, but I think that Jumbo Perch is just a sales gimmick type of thing; I believe they are the same as Yellow Perch. Someone correct me if I'm wrong.

I believe you can have SMB and HSB together. HSB should not reproduce. The success of having these fish together will depend on several factors such as if you feed, the strength and stability of your forage base, etc. Also important will be the size, depth, contour, and structure of your pond.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."