Generally, there is a large (excuse the pun!) size difference between the two. To avoid a long drawn out discussion, I will state that there is ALWAYS exceptions to every rule, especially when discussing sizes and other events that are not totally within our control….but the accepted rule of size is:
Dwarf Retic = 10' - 12' (full grown; or less)
Super Dwarf Retic = 6' or under (a TRUE Super Dwarf - fully grown)
As an example to the "outside" of the rule generalization, one of our Dwarf Retics, a fully grown Jampea female (about 7 years old), is just under 14' and NOT tame by any standards!
Another two examples are our Dwarf Albino Retics, the female being 11' and the male coming in at just under 7' (a hair under tip-tip), of course males are normally smaller in size.
~Sean~