Porkchop mellowed and things have calmed down. She still flexes a bit of muscle but not the constant chasing. Regani settled in and ate a lot of pellet food. May wait a couple days to put the red isletas back in.
So it seems like that was it. All seems well and the Regani is loving the big tank and is not that shy of an eater in there. It likes the sinking pellets and does not surface feed yet. It got beat up a little during the 'initiation' by the red Isletas and Pearsei but looks to be healing up nicely.