I was waiting for you to answer the question I asked in the other thread that you posted about this same fish before I went forth with any advice but anyhow the previous poster had some good things to say and I agree with what was said.
I would try not to give it any feeder fish but do offer it pellets and f if it takes them they should be the bulk of it's diet otherwise give it fish fillet,raw shrimp and nightcrawlers.Also,they love to hide so if you have large pieces of decor for them to get behind your dat most likely will do so.I only use small,fist sized items if anything.That way my dats are never completely hidden and I can observe them and it helps get them become used to being out in the open.