Question on Angel size

I currently have an old Angel fish (the one in my avatar) thats about 5 years old. She is 4" long and about as high, and I was wondering is this is considered "large". I was the pet store today and I saw 3" Angels labled as "large" going for $12, and ones labled "small" for $3. The small ones were about the size of a quarter. Now my question is, are the "small" ones just babies and will eventualy get as big as my current one, or is that they're full-grown size?

Thanks for clearing that up for me :idea2:

Well, I haven't bought a fish in 3 years. The last fish I bought was a black angelfish with silver splotches and one yellow streak on its front, but sadly she died just a month and a half ago, right before I moved to a new house. I had her in a 2.5 gallon tank with my current angelfish, becuase I really had no where else to put them. I used to have a 10 gallon I would have used, but my dad sold it in a garage sale with out telling me . I had only planned them to be in that tiny thing for a max of 3 days untill I moved and I could re-set up my 20 gal, but problems with the house forced me to leave them in there for over a week, and the black one died the day before I moved in.

One more question - If I get some new baby angels and put them in the same tank as my 4" angel, will they get along or is that a recipe for disaster?