Notice: Take my IDs with a grain of salt, as I am new to the saltwater side (good amount of experience with freshwater, my salt tank has had fish in it for 5 months)
The first picture looks to be a camel shrimp, Rhynchocinetes uritai (not reef safe)
Not sure about the second picture.
The third looks to be a blood shrimp, Lysmata debelius (reef safe)
The fourth picture looks to be a skunk cleaner, Lysmata amboinensis, reef safe
The fifth picture looks to be a harlequin shrimp, Hymenocera elegans, reef safe. Harlequins are nice, but a pain to keep as they will only eat starfish of Linckia, Fromia sp.
Again, like I said, take my IDs with a grain of salt. Hopefully somebody more experienced will confirm my IDs (or correct them, though I am pretty sure they are right).