Frigidoalvania brychia is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. Distribution The species has been reported from Saguenay Fjord and Gulf of Saint Lawrence in Canada as well as the Gulf of Maine in the North Atlantic Ocean. Description The maximum recorded shell length is 5 mm. Habitat Minimum recorded depth is 186 m. Maximum recorded depth is 2359 m. References Rissoidae Gastropods described in 1884