Zoanthid-Eating Amphipods

Wrasses spend all day wondering through the tank, rocks , crevices and between corals picking through them for food. 6line wrasse to me is the best at this but this fish is just too damn aggressive towards current and future tank mates that having him to protect your corals becomes more of a hassle to what he brings you good in return.
 
I already had sixline wrasse but he jump away from my tank after I put there one chelomon. I was found sixline on the floor in dried form :)
 
omg, i thought they are coral safe at least zoas safe. I have a lot in my tank, i thought they are good food for fishes.

My zoanthids have not been looking so hot recently, and last night I decided to look in the tank at ~2am with a flashlight... I was horrified to find tons of what appeared to be copepods, but much longer/bigger and almost spider-like, clearly munching away at my zoas! They looked exactly like these pictures I found, and apparently they are some sort of amphipod.

What should I do??! I might try to do a freshwater dip tonight, but I don't know if this will be anything more than a very short term fix. I saw tons of those buggers all over the tank and in the rocks.. also I have several large pieces of live rock with zoas on them, so it would be hard to remove a lot of these..

Any advice/input would be greatly appreciated!
 
This is purely opinion, and many may disagree, but I am not convinced that the zoa munching amphipods we encounter are not a different predatory species vs just being the same old amphipods that get opportunistic when they get hungry and/or their population gets out of control

I base this theory on nothing more than how else could we have these things in our tansk for many, many years, and never notice them doing any damage, and then all of a sudden overnight they just decide to go rogue on us??

Regardless, just one more reason to remove/kill everything on every coral before introducing anything new to your tank

I have taken lots of macro shots of ones I just find in the tank along with ones I know were mucnhing and I cannot visually tell any difference. But the same can be said for asterinas and in that case I know that the predatory asterinas are a different species than the harmless grazers, and side by side you cant visually tell those apart either. For this reason I toss all asterinas. For these amphipods it isnt quite so simple to just pluck them out when you see them. The dirtier your tank the more pods you will have though.
 
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