Any idea what creature is?

[IKD]

Okay so im pretty sure i saw a white circle around its body near its head so i think it might be a

Eunice valens​

which only grows to about 20cm
or i could be wrong cause i think its tentacles are dark/black colored but i gotta admit the colors this guy has which shines in all colors like a rainbow is nice too look at.

Have you noticed any empty snail shells on the ground around the cave? My gut would tell me this guy isn’t safe for your inverts (or possibly coral), especially if it has the iridescent colors.

 

[kjkszpj9]

Have you noticed any empty snail shells on the ground around the cave? My gut would tell me this guy isn’t safe for your inverts (or possibly coral), especially if it has the iridescent colors.

No, havent seen any snail shells around the main holes at all except the shells that came in the live sand bag.

 

[kjkszpj9]

Not kidding guys but in the same rock i saw another worm that looked exactly the same as the other one only this one is much smaller than yhe other one, its body was like a little more than half the size of the first one. It lives here in the hole above the biggest one and it peeked out the really small hole next to the white sand piece

 

[IKD]

Not kidding guys but in the same rock i saw another worm that looked exactly the same as the other one only this one is much smaller than yhe other one, its body was like a little more than half the size of the first one. It lives here in the hole above the biggest one and it peeked out the really small hole next to the white sand piece

The mysteries that rock holds inside! I had to break a rock apart to retrieve a mantis shrimp and it was amazing how many other critters were in the holes and crevices that I never noticed.

 

[FreeEnergyReefer]

Need help identifying this creepy thing hiding in live rock.

That's one of them bobbit worms flush it they get big

 

[FreeEnergyReefer]

Not kidding guys but in the same rock i saw another worm that looked exactly the same as the other one only this one is much smaller than yhe other one, its body was like a little more than half the size of the first one. It lives here in the hole above the biggest one and it peeked out the really small hole next to the white sand piece

Omg! Get rid of all the rock and sand and start over

 

[Tired]

That's one of them bobbit worms flush it they get big

Eunicid, yes. Bobbit, no. No need to panic.

 

[FreeEnergyReefer]

Eunicid, yes. Bobbit, no. No need to panic.

Yea right. Soon as I seen him go in a rock I'd throw the whole rock out the door. I can't even stand the bristle worms if I seen one of them in any of my tanks bye bye worm whatever ur name is

 

[EeyoreIsMySpiritAnimal]

Yea right. Soon as I seen him go in a rock I'd throw the whole rock out the door. I can't even stand the bristle worms if I seen one of them in any of my tanks bye bye worm whatever ur name is

Then you don't really want a reef tank, just an aquarium with coral and fish?

The ecosystem is the most fascinating part of the hobby!

 

[kjkszpj9]

I put in a pest trap for bristle worms but caught nothing, i guess they are pretty smart but then i also didnt catch any of the normal bristleworms either just a darn amphipod

 

[Sink_or_Swim]

Heres a video of satan himself, you can clearly see it has 5 tentacles

Where's the barf emoji when you need one...

 

[FreeEnergyReefer]

Then you don't really want a reef tank, just an aquarium with coral and fish?

The ecosystem is the most fascinating part of the hobby!

I thought an aquarium with coral and fish was the literal definition of a reef tank. Sorry nothing fascinating to me about that nasty worm. Maybe he'll catch it for you so you can put it in your tank and be fascinated. Don't get me wrong, that's why I love staring at my tank(s) like a ****** for hours. The relationship that every little creature has with each other in our handmade little ecosystems.

 

[FreeEnergyReefer]

Heres a video of satan himself, you can clearly see it has 5 tentacles

Give him a good mouthful of aptasia x or kalk paste, or tong feed him a piece of poisoned shrimp

 

[FreeEnergyReefer]

I put in a pest trap for bristle worms but caught nothing, i guess they are pretty smart but then i also didnt catch any of the normal bristleworms either just a darn amphipod

Why wouldn't you just swap out the rock and sand for new rock and sand?. The tank looks like a nano in the pics. I have an unopened bag of Fiji pink and some dried liverock if u need it

 

[Tired]

Ocean-collected live rock is expensive, and comes with a lot of benefits you don't get on dry rock. This guy's no big deal- he's catchable. Dinoflagellates aren't catchable to remove, and a lack of maturity and beneficial scavengers isn't catchable to remove.

Approaching reefkeeping from the angle of a phobia, rather than an angle of logic, isn't the best plan. There's nothing wrong with phobias (I've got a couple myself), but we have to remember not to let our lizard brain impulses win out.

A worm trap likely won't work on that guy unless it's put right by his burrow. Might try luring him out with shrimp and grabbing him out with tongs. Be sure to figure out how you're going to euthanize him- clove oil sedation is good, and you should have clove oil on hand anyway for potential sick/injured fish that are past the point of no return. He might be a creepy little cuss, but that's not his fault, and he didn't choose to be here.

 

[kjkszpj9]

I actually found a third eunice worm in one of my other rock, this one was more orange redish and i saw it kill and start eating the chiton hitchhiker ive had since i started my aquarium, i pulled out the rock put it in water for 5 min but nothing came out so i decided it was HAMMER TIME and smashed the rock and ended up with 3 rocks and the bugger was pretty much dead when i pulled it out, this is what it looked like and it was a whopping 14cm long, im leaving the 2 other worms for now cause they havent really done anything bad yet and they are a different species im sure. heres a pic of the buggar.

 

[hoffmeyerz]

I'm all for the bio diversity in my tank......but if there's any of these I don't want to know!!

 

[Danny G]

You still have it in the tank? Can try to setup a trap for it. YouTube has some solid videos of people making their own traps. I have personally not had the issue with one of these yet but I would try and get this one out of the tank.