Live food is risky with weakened fish....How long has the tank been established? 0 Nitrate is nearly impossible in an older tank without tons of live plants. Did you shake up the Nitrate cheicals for a full minute??
I feed frozen krill and silversides to my dats....They are always shy...your BP might be pairing up. i also would choose DAts or Blood Parrot.
Ok the bully is gone and i got about 12 ghost shrimp , i think i'm gonna get them to eat first then after a week or 2 I'll try starving them again. i notice when i added the ghost shrimp they were all over it. From the 12 i had i only have 4 ghost shrimp left.