what are my Balas doing?????

[hectordc9]

i was watching my tank and I noticed my two balas were swiming very strange. they were swiming together side to side ans then they started rubbing each other. they did it for several minutes.

the size of both balas is close to 4 inches. and i think they still smal to mate? don't they?
I'd never saw them act like that and it reallly catched my attention.
does any one have some similar experience wiht balas?

[lusifer]

My balas do the same thing from time to time. I have no idea what they are doing, although it is quite entertaining.

[hectordc9]

any more ideas ?