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Physa fontinalis, common name the common bladder snail, is a species of air-breathing freshwater snail, an aquatic gastropod mollusc in the family Physidae. The shells of species in the genus Physa are left-handed or sinistral .
Physa carolinae Wethington, Dillon, Wise 2009 - Carolina Physa; Physa jennessi Dall 1919 - Obtuse Physa; Physa megalochlamys Taylor 1988 - Cloaked Physa; Physa natricina Taylor 1988 - Snake River Physa; Physa sibirica Westerlund 1876 - Frigid Physa; Physa skinneri Taylor 1954 - Glass Physa; Physa vernalis Taylor and Jokinen 1984 - Vernal Physa ...
Physa is a genus of small, left-handed or sinistral, air-breathing freshwater snails, aquatic pulmonate gastropod molluscs in the subfamily Physinae of the family Physidae. [ 2 ] These snails eat algae , diatoms and detritus.
Physella acuta is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Common names include European physa , tadpole snail , bladder snail , and acute bladder snail .
The observations are restricted to Physa fontinalis, an indigenous species to areas with indigenous predatory leeches, and Haitia acuta, introduced in Germany and the Netherlands. When Physa contacts another snail, either Physa or some other kind, the reaction is a rapid twisting of the shell back and forth to dislodge the other. The muscle ...
This snail is believed to be confined to the Snake River, inhabiting areas of swift current on the undersides of large cobbles and boulder-sized rocks. In 1995, the U.S. Fish and Wildlife Service reported the known modern range of the species to be from Grandview , Idaho (ca. RM 487) to the Hagerman Reach of the Snake River (ca. RM 573).
This species occurs in: Canada and the northern United States. [ 2 ] Museum specimens [ 3 ] [ 4 ] (Academy of Natural Sciences, Philadelphia; Invertebase Portal Collection) are known from Alaska, Maine, Massachusetts, New York, Pennsylvania, Ohio, Iowa, Michigan, North and South Dakota, Montana, Colorado, Wyoming, Utah, and Nevada.
"California's Pest Snails and Slugs". University of California. 2021 "California Terrestrial and Vernal Pool Invertebrates of Conservation Priority". California Department of Fish and Wildlife. 12 June 2017 "Giant Isopod". Aquarium of the Pacific. 2023; Gordon Ramel.