fish disappearing

[StephNewman]

I have had three of my fish disappear in the last two to three months. 2 chromis and now my target dragonet, all three were on the small side, I am wondering if I have a killer in my tank. All of them looked healthy and no bodies have ever been seen. I am wondering if someone can maybe pick out the culprete. I am thinking it might be one of these. Can anyone tell me if any or all of these have a tendency on killing and devouring fish.
long tenacle anemone (large probably about 8 inches round)
tube anemone
sand sifting star fish (large)
serpent starfish
brittle starfish
I think these are the only things that could be killing them but who knows maybe it is somehting else all together.

 

[Shooter7]

They could be dying from other means and other creatures in the tank could simply be eating away the remains. I was perplexed a couple years ago when I lost a couple chromis in a little 10g tank, yet still couldn't find the bodies. Finally went in and moved rocks around and found a skeleton. The bristleworms and other critters had picked it clean pretty quickly.

 

[inwall75]

Sorry to hear of your losses.

Green Brittlestars and yellow brittlestars are notorious fish eaters. Here's a great article about them. Other colors of brittlestars are less aggressive but they will eat fish too if they are hungry enough. http://home.att.net/~ophiuroid/html/aquarium.html

Tube anemone's really pack a nasty sting and are also notorious fish eaters.

 

[saltyunderground]

It's not unusual to loose dragonettes and chromis. They are not the easiest fish to keep. So I would not worry too much unless you loose more hardy fish like damsels.

If you target feed the brittle and serpent stars they should not be interested in fish. The anemone is a risk due to it's potent sting.

 

[StephNewman]

Thanks,
I have had a dragonet for over two years and had introduced this other one about three months ago. It was healthy as well as the chromis which is why I'm more concerned about possibly having something in my tank that is devouring them. I think it might be the tube anemone as it wasn't til after introducing it that the fish started to become missing. About one fish every two or three weeks or so.