So im sorry to inform everyone but the fish died. Purchased from strictly fish and it was in very good health... My quarantine set up was simple, water heater, 10 gallon tank, water from the main display tank, and a hang on filter with only white mesh... I tried feeding him yesterday with everything that was mentioned, but he was more interested swimming back and forth trying to get out ... I did not see any signs of disease either... i think i might have needed a larger quarantine tank for this fish... what do you guys think? I also have a pajama cardinalfish that is doing fine in the quarantine tank.