Yellowish spots on toadstool?

[cnjcpb]

Can someone help me identify these spots on my toadstool? They just appeared today.

 

[eliaslikesfish]

looks sort of like mesenterial filaments, don’t quote me yet though, I’m doing some deep diving and will give an update if I find something else

 

[cnjcpb]

looks sort of like mesenterial filaments, don’t quote me yet though, I’m doing some deep diving and will give an update if I find something else

I believe it’s a Red planaria flatworm. I looked at it under a microscope at 300x magnification. It’s too big to get an overall photo of it. But I found the photo below on the web and this is exactly what it looks like.

 

[lucky7]

You’re correct , those are flatworms on your coral

 

[vetteguy53081]

Agree on flatworms. While they are not harmful as red planaria, they in numbers can smother bases of coral and block the needed light for production of zooxanthellae which is their energy source.
Removal can be accomplished by siphoning them with a 3/8" tubing into a nylon stocking and discard
OR
Add a wrasse such as Yellow coris, 6 line, lunare or malanurus OR even a springieri damsel which will eat them

With the number you have, for the next 2 weeks you will have to look for eggs and scrape off as there is likely some and would be future acoels. Eggs are really tiny