yes-
Mike D (from 2 yrs back) had P Russell spawn regularly in his 300 gal tank. The key w/ large lions is huge gallonage, and live Sw feeders. You must condition these fish w/ copious amounts of live food. Mike live on the ocean and regularly seined his backyard for Sw minnows. This is a key to success.
AS for pairs of fish thats easy, get five, grow them up and you'll have a pair or more