I've checked out all the info I can find on the net but I'm still not sure.
My Flames I'm pretty sure of - the male is a bright orange with blue tipped dorsal and the female is almost a pale gold colour.
The Banded I cannot tell, both have upswept dorsals at the rear end. Although one is more pronounced than the other, almost like an aeroplane's tail, whereas the other's is rather a low upsweep and more rounded.
The Dwarf Blues look near identical to me. Both have long low dorsals with a slight rounding of the rear end.
I will try to get some better quality photos of the Blues and the Banded.