Please ID
 

I found this little guy inside the rock. He is about 5mm length. Does anybody know what is it?

http://i46.tinypic.com/210gf7s.jpg
http://i47.tinypic.com/2a616r9.jpg

Looks like some sort of isopod/copepod.

Frankly I'd be getting rid of him but thats up to you :razz:

I'd say it's an Amphipod due to the dissimilar legs, and yah, that's too big for a reef tank IMHO :surprise:

curious, what is the scale?

You'd have a better live view. Any similar characteristics?
http://albionapbiology.pbworks.com/f...228/isopod.gif





See if you get him to go after some Doritos!
http://korovieva.files.wordpress.com...s_doritos1.jpg

good thing you got him out. that would attach to a fish - it's a "Cymothoa exigua" or tongue parasite

No, it's definitely not a "Cymothoa exigua". It some kind of isopod/amphipod species.

Cymothoa exigua it's type of isopod's
But this guy don't look parasite as what I'm seeing on Wikipedia

Run...don't walk. It's a baby...

https://encrypted-tbn0.gstatic.com/i...rgRLHR3m3vLxSg

Isopods that attack fish do it very quickly, like within minutes of a fish being present. If this thing was living in the rock, it's likely fine leaving it there. Just keep it away from the Doritos!