Are we sure about some things being safe for our Corals?

I posted on the A.S.A.P for this Coral a few weeks back, it was bleaching out /dying really fast or was it? I find it odd once I removed what I believed to responsible for killing my Coral that the progress was halted and my Coral has recovered nicely. Is it coincidence that the dying of my Coral stopped when I removed those large conehead snails? I don't know, but I sure have my doubts, I had a 2nd Coral that a large conehead snailed was on and his tissue started to die off also, I had since removed 5 very large conehead snails and both Corals have recovered nicely.
I think some of the animals we assume to be safe for our animals, may actually really be killing our Corals. Keep your eyes on those things and your Corals.

 

If you saw them on the coral and it was dying, there's a strong chance they were munching on the coral's tissue. Without a doubt, misidentification- and in some cases, blatant laziness and greed on behalf of collectors- has and will continue to land opportunistic predators in our tanks as reef-safe janitors.

 

Everyone in the CoC is to blame, even the buyer.

 

Here I go again! in the lower parts of the Coral that was white when I orginally made this post had recovered well, I notice this today, I have another bad white area on my Coral and look who is right in the middle of it.

 

We are talking Astraea here?

Now that I find hard to believe.

Definitely some members of a cuc may be opportunistic eaters. Astraea snails have always been one of my favorite snails and I have never seen them physically on a coral or anywhere near a coral that has tissue loss.

 

I would say that it's a coincidence.

When coral tissue recedes, it creates the perfect spot for algae to pop up which may be why they are hanging out in that area.

 

+1 It's happened to me before as well.

 

No Corailline! it's not an Astraea Snail, these guys were not bought, they are hitchhikers and the best description I can give is they look like a rose thorn, when I 1st noticed this I had got rid of 3 very large ones when I found them on the Coral, then it healed up fine, now I had another spot and then again there is another large thorn looking snail. The first orginal spot that was all white that healed still looks normal now. I will keep an eye on the newest white area and see if that spot heals as well.

 

I would buy that, but from what I have seen there been no signs of algae growing on the Coral.

 

Hmmm all I got was Astraea when I googled cone head snails.

Sounds like you have confirmed that it does indeed eat corals but I sure would like to see an image just in the interest of ID's and nerdy stuff.