ID please

[orchidsnfish]

These things are popping up on the glass in my planted tank. Never seen one before. Some type of filter feeder I'm sure, but anyone know what it actually is? I also have an explosion of CLEAR flat worms in the tank which dont bother me since they aren't the bad guys. Strange to have so many though since they are usually only in new tanks from what I have read and IME.

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[Ashlar]

Maybe an egg case for something?

 

[bigtex52]

Are we talking about the white cylindrical thing or the little red/white thing on it?

 

[hooterhead]

I think Ashlar's got it. Many nudibranch and snails lay egg clusters very similar to that.

 

[toaster77]

very pretty in its organization

 

[orchidsnfish]

Maybe an egg case. It looks like a piece of white screen. I thought I had dropped something in the tank the first time I saw one. It's about 1" diameter and sticks out from the glass about 1/2". I don't know what it would be. Would have to be a hitchhiker as there isn't much CUC in there. Just some blue legs.