Need an ID for 4 please

I need 4 IDs please!

1st picture: Pale blue with white tentacles. I've had it for a while and it's split from 2 to 3, but it's been moved all over the tank so I'm not sure what spot it was happiest at because I can't decide what it is (acan?). Currently in high light/flow.

2nd picture: LFS said it was a Trachyphyllia, but if anyone can narrow it down more that'd be great. Red and green with dark patches, no tentacles seen at night or day. Placed low flow/light on sand bed.

3rd picture: I'm looking at the bright green clump. Spotted it tonight while the actinics were on. It's very small compared to my palys and almost looks like a goniopora, which is odd cause I have a goniopora frag that hates my tank and never fully comes out. Low light/flow.

4th picture: The worst picture, but most important one that needs ID'd (circles in red). I believe they might be hydroids. They are very small with thin brown stalks and tentacles at the tip almost like a mace. I almost didn't see them until I was rearranging the tank and they were put out front. I've had this particular rock since the beginning of my tank (about 7 months) and this is the first I've seen of them so hopefully they're not the super invasive hydroids. If they are hydroids would Aiptasia X work on them or should I paste them with kalkwasser? Rock is moderate flow, low light.

Thanks for any and all help! I'll try to answer any questions if need be.

 

1: Yes could be an acan but there is nothing within the picture to compare to size wise.
2:Trachyphyllia radiata, you pick the designer name. Very attractive coral.
3: I am unable to clearly make out the image. If you have any Euphyllia like Frogspawn, Torch it could be a product of bail out. Goniopora do reproduce by budding but I can not tell from the image.
4: Do look like Hydroids but again need a more focused image or macro image.

For coral ID's you can always go to Liveaquaria.com, Vivid.com......

 

1. lobo family, maybe a green brain
2. Red & green open brain (trachyphyllia geoffroy)
3. frogspwan
4. hard to tell need a better pic, but if i was to guess i would say an aiptasia

 

1st one is a favia frag.

Also agree on 2 being Trachyphyllia radiata.

 

Each head on the first picture is about the size of a nickel, overall the size of a half dollar. I'll snap a better picture when my camera battery finishes charging.

I don't have any frogspawn, but I do have a hammer coral (put it's purple, not green). That particular piece of rock that the hitchhiker is on came from a tank break-down from a while ago. I'm not sure if the original tank had frogspawn or not since it was mostly little pieces left when I got there. Should I try to move it or let it grow out? I'll try to get a better macro of it.

I'll also try to get a better picture of the hydroid-like stuff once my actual camera finishes charging. Should I grab some kalkwasser at my LFS today just in case or will Aiptasia X work?

Thanks for the help so far! The trachyphyllia is somewhat new so I'm hoping his colors come out even more after a few more days.

 

#3 might be an Alveopora also

I think #1 could be a favia

#4 colonial hydroids

And #2 T. radiata

 

Well whatever was in picture #3 it's gone now. No idea where it went and it's not on any of the surrounding rocks or sand. Hopefully it shows back up in the future and didn't get eaten or stomped on by a snail. :-/

Thanks for all the help. I'll look into both favias and lobos and see where to place mine and treat the stuff in picture #4 as hydroids with some Aiptasia X or kalk if that fails.

I do check liveaquaria.com and other places, but it's better in my opinion to have an actual person help you with an identity than trying to guess from a handful of Google images. Then you might think you have a super rare coral and then find out it's something common (doesn't matter to me, but does for some). Thanks again everyone!

 

Place the favia in the lower third of your tank and the trachy on the sand as you have it.

Bummer on #3 it is always fun to see what you end up with.