I think the guy pictured above is a shrimp of some kind... heard 2 small snap/clicks (like static electricity) coming from the tank so either a mantis or a pistol shrimp?

1) I did also find 2 crabs in my tank as well.. can anyone ID these? This first crab will now be relocated into my sump.
http://i940.photobucket.com/albums/a...k/IMG_3074.jpg
http://i940.photobucket.com/albums/a...k/IMG_3044.jpg


2) bad picture but can just make out the legs dead center of the pic.
http://i940.photobucket.com/albums/a...k/IMG_0782.jpg

3) and after taking a pic with the flash of the second crab I also noticed this little black pod located just to the left of center of the picture right next to the bottle I used to trap the first crab. Kinda looks like a shell and has since dissappeared.
http://i940.photobucket.com/albums/a...k/IMG_0781.jpg