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Can U Help Identify These?

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diamondgeezer

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Hi all.

It's been a while since I posted, I have an 80g tank 4 months mature now. The algea cycle started brown, then went to green, then red; and recently it's now all cleared and I'm left with some good coraline growth on the live rocks. Currently I only have a couple of damsels to aid the cycling, but I'm keen to start adding some more variety.

Before I do add anything more I needed some advice on some small organisms which have bloomed in numbers; probably to over 500 in my tank of these little things:

Copepod.jpg

I think it is copepod but I'm not sure. They are about 2-3mm long (this photo taken with a macro lens). They are attached to the glass and sway with the flow of water, filter feeders I guess.

If it is copepod, then I'm somewhat relevied as I hear they are beneficial. Can anybody confirm this?

Thanks in advance.
 
I was interested in this question so went and did a little research

Rotifera: Eurotatoria: Digononta:
Order Bdelloidea

This is the closest i found :good: They will do a good and make a nice meal for one of new fish

Seffie x

:fish:
 
seffieuk said:
I was interested in this question so went and did a little research

Rotifera: Eurotatoria: Digononta:
Order Bdelloidea

This is the closest i found :good: They will do a good and make a nice meal for one of new fish

Seffie x

:fish:
Click to expand...

Thanks to you all, what a great response. I have googled the Bdelloidea Rotifers and it looks like a good match. As you say, just got to find a fish which loves it.
 
If you are planning clowns - then woo hoo, they love them as do most fish who are not algae eaters

Which fish are you thinking of?

Seffie x

:fish:
 
Ehh, they don't look at all like rotifers to me (not that I'm a marine expert).

Rotifers are teeny tiny things that as far as I'm aware are mainly freshwater, though you can buy marine ones in bags at LFS as coral food so obviously they are existent in the sea too. There are loads of different species that can look very different from each other...but all of them are smaller than the critter in the OP's pic.

As for what they are: I dont know...but I've seen loads of them in varies marine tanks too and I would presume they are totally harmless filter feeders.

Would be interested to find out if anyone does know what they are.
 
its taken with a macro lense so they look huge there only like 2mm big he said tho
 
Don't know much about rotifers but the only ones I've seen are microscopic (a few microns thick), with a few cells of phyto inside them.
 
Hi All,


Well they do look a bit like Bdelloidea Rotifers apart from Bdelloidea are only 0.5mm big and are fresh water Rotifers:

Bdelloidea Rotifer

I think they are too big to be any type of Rotifer, but I don't have a scooby what they could be. :unsure:

Hope you find an answer.

Chris
 
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