HCA: Hermit Crab Association

I just acquired two ecuadorian hermit crabs i know how to take care of them but when choosing them i got 1 ecuaddorian and one ruggie.one is a ecuaddorian thats greyer with patches of dark gray and one is a ruggie for sure verry light grey with peach coloring do i return the ruggie and get another ecuadorian or will it be like having the company of their own need answers please also maybe a specie identification chart please

HiI'm no expert, but I recall hearing that they can live together with no problem.http://www.hermit-crabs.com/species.htmlEcuadorian vs PP identificationhttp://www.hermit-crabs.com/exotics.htmlExotic identification