2,3,4 are about 5 cm long, others 2-3 cm long
#2 all the time in the shell, coming out only for food (it is the biggest one, approx. 5-5.5 cm long)
#4 sitting in rocks, not coming out (or rarely)
#3 have no particular shell and swimming everywhere, lloks like the bass
#5 is the smallest one and spend all the time on the top of the rocks
#1 and #6 guarding shell, usually outside of the shell
#7 is another smallest one, hiding in rocks.
Yes, there are the same color as on pictures.
I want to sell some, because there are to many of them (actually 10) and I see growing agresion in the tank, but do not want to end up with all males or females.