I guess in this setting, murasa types are still so rare they can't just be bought off a yukkuri pet store.
There are dishonest merchants producing counterfeits, thanks to the public's inadequacy with regards to knowledge about aquatic yukkuri. One must carefully make a choice.Firstly are the different species. As of right now, only three types of aquatic yukkuri are known: Shell Marisa, Hatted Marisa and Nitori.