please id this critters

[tamren]

It's scaling on the glass but not as fast or as active as copepods (that bacteria with a little tail)

Should it go, or should it stay?

Any response is much appreciated.

[tamren]

Correction, it's not moving at all, even if I pinch it. It looks like a spider or something. Is this a parasite?

[bada]

I have no idea what it is. If it were in my tank I would probaly take it out! It is hard to tell by the picture, how big is it?

[tamren]

It's very small. It's like a dot in the glass.

[ReefLady]

Hydroids. They're harmless & will probably dissapear as quickly as they appeared. Fairly common in newly set up tanks. Take a peek at this link:

Dots With Legs - Staurocladia oahuensis - Tiny Hydroid Jellyfish That Walk Around Tanks

HTH!

[tamren]

Thanks ReefLady, that website is very helpful.