Zoa has black ball in center

[kyreefville]

Zoa has a black ball in center should be green one next to it seems to have a little black it’s like mouth sticking out and black?? Excretion? I tried fanning it didn’t move.

 

[kyreefville]

Sorry I missed the Zoa subsection

 

[kyreefville]

I’m thinking it’s a poo ball

 

[SueAubu]

Poop!! They're healthy!!!

 

[kyreefville]

Thx