what are these inverts.

[RayAllen]

Ok folks

I have seen these before on my tanks the 1st several weeks/months and I do not remeber what they are called.

You can only see them on the glass. They are circle in shape with 5 or so legs and clear to white in color. Very small. My lights are not on now so I cant get a pic, but will later if needed.

[BIGBIRD123]

Asterina starfish

[BIGBIRD123]

If they get bad and they can get bad. You can use a harlequin shrimp to get rid of them, then after they are gone, you either need to get the harlequin out or use chocolate-chip stars to feed them

[RayAllen]

Steve these are not Asterina Star. I know what those little buggers are. My BC 29 has tons that I need to kill.

In the 180 this is something else. They are clear in color and super tiny. My camera can not even pick them up. It tries to focus on eveything but them. Im searching to see what I can find.

[Europhyllia]

hydroids

[RayAllen]

Nope not Hydroids, but you did help me find what they are!

hydromedusae (Staurocladia oahuensis)

[RayAllen]

Thanks Karin! And my wife calls me a fish nerd ;)

[Europhyllia]

lol
as far as I know the medusae is just a stage in the lifecycle of a hydroid.
See here:

Most coastal hydromedusae are asexually budded off their single-sexed parent hydroids (http://www.ville-ge.ch/mhng/hydrozoa/hydrozoa-directory.htm).
http://faculty.washington.edu/cemills/Hydromedusae.html

[RayAllen]

Here is a good read on them, mine look like the 12 or so pic down the page.

Good thing is that they are nothing for me to worry about.

http://www.wetwebmedia.com/jellyidfaqs.htm

[Squiers007]

Not to be technical or anything, but a "hydroid" can be any animal from the Class Hydrozoa. So that covers a wide range of animals from the so called aquarium "hydroids" to Fire Corals and many types of jellyfish.

[Europhyllia]

That's what makes the term so appealing! I like to throw it out there because chances are whatever it is is covered under it and I get to be right :D lol