Anyone Know What Crab This Is?

[seaweed]

Yesterday for the first time I noticed that there was a small crab living in my fine green hair that I ordered over a month ago. It doesn't look like any of the crabs that I've seen or have. He's about 1/3 of an inch in size body shaped like an emerald mythrax, but it looks like his body is camouflaged like the fine green hair. He's so well camouflaged that he's almost invisible. If it wasn't for me noticing movement in the hair, I would have never know. Anyone have any ideas.

 

[playtime]

Are you sure it isn't an emerald? You know that they can be many colors right? Can you take a picture or see if you can find a picture that matches.
playtime

 

[seaweed]

Hmmmm, could be an emerald. But the amazing thing is it's coloring looks like green stripes and it matches the fine hair grass plant. Also, it never leaves the grass. I'm going to try and take its photo.