Super Shrimp!

Wondering if anyone has ever kept this type of shrimp?

Is that a macrobrachium? ;o
I can't ID shrimp at all but thought I'd ask if it was that anyways. Hopefully I can get better at it so I don't accidentally get one in the future :c

Are they ghost shrimp?

by the size of the arms, they could be a threat to your fish.. if possible. i remember reading about some shrimp that are mistaken as ghost and look like the one in the pic and have attacked your fish.
i don't know the name, but watch out for that.
Ninjouzata could be right with what the shrimp is, i'm going to guess that as well

I think you guys are right. macrobrachium ohione to be more exact, if my research isnt mistaken! I never looked up the species now. Lol. Well just to give some info on it, I have had it for about 6 months now and it is a very interesting shrimp to look at when it is out and about. It eats small pellets i feed my fish and well from my observation it only acts aggressive to new additions to the tank. I wouldn't put any small fish in my tank due to my semi-aggressive set up, but in sure it could snatch and hold guppy size fish!

That certainly does look like a macro to me.
 
If it is confirmed as a macro, do look at the pictures posted by The Lock Man in the link below, they grow to be a fearsome size and not to be kept with any live stocking that you want to keep for any length of time. An interesting read.
 
http/www.fishforums.net/index.php?/topic/426904-shrimp-bargain/?hl=macro#entry3613112

I have kept indian whisker shrimp and they are a macro shrimp and everyone said they are a threat to my fish but I never have any problems with them. I am sure they will get the sick ones especially the small ones like my neons. I think they did this actually but I think its a good thing that they take care of the sickly ones for me.

This is one scary shrimp once it grows.