yesterday just got a Betta, dunno what's the type looks a bit like Delta tail or HM, i dunno..too bad currently dunhav a camera.

Anyway, i want to ask, is Ketapang leaf easy to find around housing area? Because my place over here didn't sell ketapang leaf, & is there any other kind of leaf can replace the ketapang ?
Currently my betta is in a small tank with Java fern together, & from what i hav observe until now, it frequently will flaring its tail, even when i'm not near it, does this mean anything ? & why does it didn't show its fierce face when facing the mirror?
One last question, do we need to add salt everytime when do water change ?   
Is any of the below is the ketapang leaf ? not really good in differentiate even i watched the previous ketapang picture in this thread.
btw, what do we need to do first b4 putting the leaf into the betta tank?