It's something unique, it fills a marketing niche by having something that no one else currently offers. Hybrids with no green sunfish in the mix.

Zimmerman's fish has this description of the Ozark/MO LES.

"Very colorful sunfish but are rather aggressive so best kept in groups of 6 or more or as a single fish with a group of smaller active fish."

Is there a benefit to breeding some aggressive traits into RES? Redears do have the potential to get bigger than all other sunfish.