Rissoina dyscrita is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. Description The maximum recorded shell length is 6 mm. Distribution This species can be found in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles. They can also be found in Eastern Florida to Lesser Antilles, and Bermuda. Habitat Typically found in benthic, grazer, hard substrate, or soft substrate (muds, sands, clays) habitats. Minimum recorded depth is 0 m. Maximum recorded depth is 4.5 m. References Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas. External links Rissoinidae Gastropods described in 1990