Who is the culprit?

[Khanh]

Dear all,

Few months ago, I added peppermint shrimps to ate aiptasia in my LPS tank. Most of aiptasia are killed and some of peppermint shrimps are still in there.
These days, my acan, open brain, plate are bited and lost the polyps, a branch of hammer is died off and the blasto is shrank off.
Do you think the peppermint shrimps killing my LPS? If so, how to take them out?

My parameters:
Salinity: 1.025
Temperature: 79F
KH: 8.6
Ca: 470
Mg: 1410
NO3: 10
PO4: 0.1

Thanks
Khanh

 

[Auto-pilot]

I do not believe it's the peppermint shrimp. It could be some sort of infection

 

[Grey Ghost]

If you suspect the shrimp is doing the damage try and observe if they stick around the corals showing the tissue loss. Specifically during the lights out period is when these shrimp feel safest and you can usually catch them in the act if you spotlight with a flashlight.

 

[Khanh]

I do not believe it's the peppermint shrimp. It could be some sort of infection

Worm?
My friend told me, he used to see a peppermint shrimp ate a whole plate coral

 

[Katrina71]

Gorilla crab? Is it possible you have one? My plate coral had a huge chunk out of it, had been dragged to a small cave entrance. I had no idea until then that I even had one.

 

[Jay Z]

First thoughts that come to mind from the pictures is bugs of some sort. Ive never seen any of my shrimp go after a heathy coral. They will go after dying corals and clean them up, leaving the heathy untouched.

But under fed shrimp will do weird stuff.

 

[Khanh]

If you suspect the shrimp is doing the damage try and observe if they stick around the corals showing the tissue loss. Specifically during the lights out period is when these shrimp feel safest and you can usually catch them in the act if you spotlight with a flashlight.

Thanks so much for your advice

 

[Khanh]

Gorilla crab? Is it possible you have one? My plate coral had a huge chunk out of it, had been dragged to a small cave entrance. I had no idea until then that I even had one.

I haven’t seen any crab in my tank. But I will observe carefully. Many thanks

 

[Katrina71]

Look at night with a red light if you have one

 

[Khanh]

First thoughts that come to mind from the pictures is bugs of some sort. Ive never seen any of my shrimp go after a heathy coral. They will go after dying corals and clean them up, leaving the heathy untouched.

But under fed shrimp will do weird stuff.

Thanks friend, I think the bug eats SPS only, am I wrong?

 

[Khanh]

Look at night with a red light if you have one

Thanks. Could you please show me what kind of red light?

 

[EW_Fish]

First thoughts that come to mind from the pictures is bugs of some sort. Ive never seen any of my shrimp go after a heathy coral. They will go after dying corals and clean them up, leaving the heathy untouched.

But under fed shrimp will do weird stuff.

I use to feed my peppermint shrimp. He started going after my big money acans that had taken any food in... He ended up killing one colony before I found out it was him. Hes now gone and all acans are nice and fat again

 

[Khanh]

I use to feed my peppermint shrimp. He started going after my big money acans that had taken any food in... He ended up killing one colony before I found out it was him. Hes now gone and all acans are nice and fat again

Thanks for your information. Could you please show me how to take him out?

 

[EW_Fish]

Thanks for your information. Could you please show me how to take him out?

 

[austenreefer]

Worm?
My friend told me, he used to see a peppermint shrimp ate a whole plate coral

My peppermint shrimp eats the shrimp I put in there. Never had him eat my coral.

 

[Khanh]

Thanks so much friend