Is it normal? pair of clowns suck bubbles of my BTA

[popwin]

I found my clown fishes sometimes suck bubbles of my green BTA. They just push bubble into their mouth and suck for a well and then change to another one. I thought my BTA must enjoy it but today I found scars on 2 bubbles. Now I am wondering.. is it normal?

 

[davocean]

Yep, normal.
It's been said that they rub and suck on tents to absorb sting cells to obtain immunity.

 

[jyxie]

ya, that means they will host the bta soon, dont worry

 

[popwin]

Thanks!