Fish poop?

[Crocpete]

Noticed these for the first time, saw the same thing before but they were white. Pretty sure it was old fish poo but figured the CUC would have taken care of it. Any ideas? They don’t move or anything, just want to be sure

 

[Lovemyreef2015]

Could be snail poop

 

[BranchingHammer]

Some sort of poop

 

[Crocpete]

I didn’t know snails poop! Thanks for info

 

[Lovemyreef2015]

I didn’t know snails poop! Thanks for info

You're welcome