Flame Angel Eating Habits

[hillrc91]

I purchased a Flame Angel about 24 hours ago. After proper acclimation, I released him into my display tank. While he seems to graze on the green algae on my live rock, he refuses to eat any prepared foods for herbavores. It doesn't seem to matter what kind: frozen, flake, or pellet.

Is this normal?

Is there some food that I can entice him into eating:

Current tank parameters are below:
PH 8.14
Temp 76.3
S.G. 1.024
Alk 3.50 Meq/l
D.O. 7.2 ppm
NH3-N: 0.001ppm
NO2: 0.0ppm
NO3 : 9.8ppm
PO4: 0.0ppm
SiO2: 0.0ppm

45G FOWLR
6" DSB
37 LBS live Fiji Rock

Tank Mates:
1 False Percula Clown
1 Sixline Wrasse
1 Yellow Tailed Blue Damsel
1 Pseudochromis Fridmani
1 Stenopus Hispidus
1 Lysmata Debelius