What are my angels doing?

abcdefghi

AC Members
Jun 6, 2007
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I have 3 juvenile angels in my 55G (no other inhabitants)........ they usually always peck at each other, especially when one enters the others area. Lately (today) the 2 largest ones seem to be just staring at each other, its kind of weird, like they stop facing each other, and will both twitch towards each other in a kind of "who is going to make a move first" action.

Then they swim off again, and carry about their usual business of pecking around exploring and chasing each other around. Is this just another sign of aggression or is anything else happening with these 2? Both angels are probably about 4" in height (fin height) with a body of about 2" diameter.
 
Seems a bit small/young for spawning behavior. How long have they been together?
 
I have had them for about 6 weeks now, got them all together from the same place though so no idea how long they were together there for.

They have grown considerably since I got them, but I am not sure how old they are.
 
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