Fuzzy spaghetti

[FishTrader]

My system is about 7 months old. I dip every coral and acclimate every fish. No rock was dry. I found this just now and thought it was what left of small dead fish but appears to be a long scribbling fuzzy tube. I've searched and can't find similar (in probably using wrong term but to me looked like fuzzy spaghetti), please help

 

[harrylarry]

Look like eggs, have snails?

 

[kazeespada]

Those are definitely cerith snail eggs if he has ceriths.

 

[FishTrader]

They are! Thank you!