Reef Discussion

[Dean Lovett]

A few weeks ago I got some new LR for my tank! And along with that came hitchhikers. One of which was quite peculiar.

I'll do my best to describe...

I have found it on a few surfaces. But recently on the glass. It is a flat, round disc. That's pretty much it. And when I say flat. It is flat. It is like a really pale blue. A really really pale blue, very slightly blue and incredibly slow moving.

It is about 5mm in diameter, it looks as if it is hard, it isn't soft like a nudibranch is, it is hard, flat and a circle.

 

[lukusis]

Abalone?

 

[Dean Lovett]

Abalone?

I googled it and, nope not it. It is literally a circle with no embellishments or anything... It seems as if it is a really simple organism.

 

[dimitri]

• Nudibranch eggs
• Spirorbis - Tiny while calcareous worms, that mostly will develop in the dark areas. Filter feeders and a sign your tank is doing well, very common.
  

Probably one of he two

I have similar on the black back wall of my tank, just showed up

 

[Dean Lovett]

I looked them up and I dont think that is them! Thanks for the response though!

Here are some photos:

Note in the first photo, it is not the new head on the duncan I am talking about! Its the thing closer in the foregorund.

 

[grimnir]

Limpet of some kind. I have many of them in my big tank. Found a huge one in the return chamber of the sump.

 

[Savage Henry]

Limpet of some kind. I have many of them in my big tank. Found a huge one in the return chamber of the sump.

I would guess they are limpets too, but normally limpets have a raised hump.

In the first picture there looks to be a faint pentagon shape. It had me wondering if these could form into a starfish???

Nevertheless, these really look like small flying UFO's that have coincidentally landed in your tank Dean. I bet if you remove one from your tank it will fly away. Nothing unusual.

 

[MagicJ]

Can you take one out of the tank and take a photo of the other side?

 

[Dean Lovett]

I would but, it looks the exact same on both sides. Completely flat as well.

It's moved about 2 cm today...

 

[MagicJ]

Maybe some type of flatworm?

 

[LEG-IT]

Mate based on that description and photos, sounds like you've got yourself a @leodb89 on your hands

 

[ReeferRob]

I'm with MJ, sounds like a flatworm, but we really need a picture of the top to make a positive ID.