Blue Damsels Behaviour

[jeasko]

not sure wat happened here!
just observed my damsels over the last few days and was amazed! while ive got used to them fanning the substrate in one corner yesterday they were moving LR rubble nearly as big as themselves, while it doesnt cause me any concern im intreaged as to what its all about?
anyone offer an explanation?

 

[dilbert]

arwe

 

[Lynden]

Sweet!

 

[SkiFletch]

Nesting behavior perhaps

 

[jeasko]

kind of what i thought but the only thing that worried me about that was that they may become more aggresive towards other inhabitants in my tank

 

[jaypime]

Hey buddy i have two of them .. they are pretty cool now. But i started up with 4 of them and the 2 strongest one pick on the 2 other ones until you i had only 2 of them.. but now them two are something alse.. they are allways fighting each other one after the other one . but i been told that the older they get the more aggressive. But they are pretty cool with my other fish. I have two Clown Fish.. yellow tang. and i also have green demsel