Zoa’s melting! Can one type not be affected?

[moz71]

So I had these two types of zoas growing in a large patch for over year and a half and all of a sudden one is melting fast within a day a2inch by 2 inch patch literally melts to nothing and happening day after day. However, the other type of zoas don’t seem to be affected YET! Is it possible or common one can be affected and not another? Hoping!!! The more colorful ones are good but the brown boring ones are dying so not overly depressed yet. Tank has been rock solid from when they were growing fast. Just happened out of blue and did not add anything in over a year so just chalking it up to one of those mystery things. Please tell me there is a possibility the colorful type will survive?

 

[EeyoreIsMySpiritAnimal]

Please post your past and current test results. It's impossible to know what might be wrong without a lot more information.

 

[Glenner’sreef]

Possibly a Zoa eating Nudibranch? I’d consider removing that rock possibly dipping it.

 

[moz71]

Possibly a Zoa eating Nudibranch? I’d consider removing that rock possibly dipping it.

But had zoas in tank growing for just about 2 years and didn’t put anything new in tank for over a year. I was thinking more of some type of bacterial infection.

 

[Glenner’sreef]

Anyone in the tank who might have an appetite for certain zoas over others File fish? Trigger? Etc.

 

[moz71]

@Glenner’sreef . Yup! You are right. Just caught my regal angelfish pecking them off one by one. He was sneaky:he swims by grabs a bite and moves on in one motion. Circles around and does it over and over. Going to move remaining to other tank. Worried he is working towards the pretty ones which most likely will happen now. Urg

 

[Glenner’sreef]

@Glenner’sreef . Yup! You are right. Just caught my regal angelfish pecking them off one by one. He was sneaky:he swims by grabs a bite and moves on in one motion. Circles around and does it over and over. Going to move remaining to other tank. Worried he is working towards the pretty ones which most likely will happen now. Urg

A rogue Regal? Go fig. Congrats.