Cross breeding fish?

[Stuquarium]

hey guys,

i have a pair of clowns in my tank as well asa a humbug damsel and a yellow tailed blue damsel.

tonight i saw the blue damsel lieing in the substrate and wiggiling its tail really fast kicking up the sand. this wenty on a while, it kind created a hole

then i noticed the humbug and blue damsel swiming close together, sometime on thier sides, up and down the tank. this went on for a few minutes..

whats going on here? can different fish breed with each other? is it a territory thing? and how can we explain the digging?

it's all very cool to watch but i'd like to know whats happening.

thanks guys

 

[mjvincent]

I have a yellow damsel that does the same thing... I think it is an aggression thing...

 

[Stuquarium]

that was my 1st thought then when the humbug got invovled, then they both go and hide then come out and the blue damsel diggs a little more. and rubsits self on the humbug, and some of the LR

thanks mate