How Good Are Your Hitchhiker Id Skills?

[jack-100]

Okay ive noticed a few things crawling around in the tank, just need to know whether they are reef safe and any info on them would be sweet. Ive already battled my aptasia which was a pain
So heres the pics -

(the hole thing between the polyps)

(Its the wormy thing)

Any help would be appreciated, cheers

 

[Truck]

(Its the wormy thing)

bristle worm?

 

[Colin_T]

How Good Are Your Hitchhiker Skills?,
much better since I've been wearing my T-shirt with the big boobs and little bikini on

pic 1 has a sea squirt in the middle of the polyps.
pics 2 + 4 are nudibranchs or seaslugs.
pic 3 are colonial coral polyps.

 

[jack-100]

i think pic 4 is stomatella and pic 2 is either a sea slug or nudibranch, but it wouldnt be harmful in the tank correct?
the colonial coral polyps wont be harmful then? they are multiplying quite quickly across their rock

and pic 5 is the one thats had me baffled - i just seen another worm but it was smaller (less than an inch in length) and slightly fatter. if pic 3 is a bristle worm, then the other one i guess would be a fire worm (which would not be good). can anyone confirm what pic 3 is?

ta

 

[rabbut]

Nudibranch's eat corals from the Zooanthid genous (Button Polyps e.t.c) and store their poison in the process. If you have these in the tank, it's highly recomended to wear thick gloves in the tank, as they are potentially poisonous to humans I'm fairly shure that the picture number three is a soft filter feeding coral of some sort, so Colin_T is almost certainly correct

 

[Colin_T]

Most of the coral eating nudibranchs are brightly coloured and often have little tentacles coming off them. The drab brown or green ones usually live on seaweeds and are normally quite harmless. However, there are so many available you can't be quite certain unless you know where they came from.

 

[jack-100]

okay cool well pic 2 is probably a harmless one as he isnt that colourful, and there are actually about 3 in the tank and i havent seen them eating any of my polyps

its pic 5 that has worried me a bit, is this a nudibranch? he is quite long and does seem to hang round the polyps, only ever seen him on the dead polyps tho. there are a couple of live polyps on that rock and they are still opening fine and he hasnt been on them yet. He isnt that brightly coloured other than his 2 tentacles on his head are a bright blue. Could this be maybe be a baby bristle worm?

Good thing tho, i seen my red legged hermit today which i thought had gone missing...hadnt seen him in nearly a week!

 

[Colin_T]

I really need a better pic of #5. It's just too hard to tell from the current shot.

 

[jack-100]

Okay he was out today and i managed to get the settings on my camera correct so i think i have a fairly decent pic of number 5. Im more inclined to think hes a bristle worm

 

[SkiFletch]

Looks more like a bristle worm to me.

Also to correct, there are thousands of Nudibranch species kn the sea. Only a few specific types of nudibranchs eat zoanthids. Some eat algae, others eat montipora, still others eat anemones. The one thing all nudis have in common is that they have exceptionally specific prey. They only eat one thing and usually incorporate parts of that prey tissue in their own flesh, often poisons. In zoanthid eating nudis, that part is palytoxin which happens to be the poison they use to prevent them from being eaten.