Ok let me see if I can answer...
1)They can be peaceful, I have some that are pretty chill, but I keep them with fish that are mostly the same size or bigger. 2) They may eat your mollies (at least baby mollies) if they can. 4) An angelfish and a full grown mollie should be ok though, I would think. 3) they can be territorial, but usually only to other angels or only when breeding IME. 5) I wouldn't feed baby fry until they are almost full grown, but it depends on what kind of fry. 6) no, it is not true that you need an odd number of angels per tank. I (and many other folks) have a pair in my tank, and they get along fine. This is especially true with mating pairs, as they can/will harrass a third angel to death. Best practice, IMO, is to get 5-6 young angels, wait for them to pair off, then sell or return the rest to the store, leaving with a pair. 7) I would imagine so, but I would avoid doing so. If you mean "Can I get two diff. color patterns to breed" I'd say knock yourself out (yes). 8)I would not put full grown angels in a 29. Its a bit small IMO, but people have kept 1-2 in such tanks. 9)like fish? 10) I feed mine various flake foods, New Life Spectrum community pellets, occasional treats of frozen brine shrimp, etc. 11) not sure, I've never bred them.
Anyone else have input or corrections if I'm wrong about some of this?
Justin