I am assuming you want us to sex these for you?
It can be difficult to tell depending on the timing of when you look at them. The females will have a band of eggs at the back of their heads that will slowly fall down to their underside over a period of a week or two until the eggs are hanging under the females bodies attached to their whispy legs. (There's probably a proper name for these)
If the eggs get fertilized by the males, they will be visible under the females getting bigger and bigger until babies are released.
Males are generally smaller and slimmer as they don't have to allow space to carry eggs.
Have a go at sexing them yourself, as the pictures may not be clear enough to tell. At the moment from the pictures I would say:
1) female, 2) male, 3)male, 4 & 5 no idea. Need to see side on profile to see their shape.