Also depends on individuals.
My male krib is now a wimp and doesn't bother anyone, female chases marlier julie and CAE and thats it (basically the fish that chase or follow them). They don't bother neons, bronze cories, swordtails, SAE's or my eel.
They are dominant at feeding time though and don't like me trying to scare them off when I hand feed the eel, and they let me know too, nippy little buggers .