I wasn't able to use a QT tank for my angelfish. (I live in an apartment, and only one tank is allowed, no exceptions). So, she went straight in to the main tank. She was very shy at first, and mostly hung out in the plants by the heater. She did eat when I fed her, but not as greedily as my other fish. And she did wait for the food to come to her, while the other fish went to the food. Some foods she clearly liked better than others--the frozen blood worms/brine shrimp especially. I've had her for a couple months now I think, and not only has she grown a lot in size, she's also gained a lot of confidence. She's out and about much more, and will chase the other fish sometimes too. Not really aggressively, but definitely asserting her authority, and claiming territory. (oh and I have no idea if it's a she, but my roommate wants her to be so she is). I do think having many hiding places helped her feel more secure in the beginning.
Emily
Emily