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Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few
Ghonghi, fresh water snails by Tharu community of Nepal. Ghonghi is commonly consumed in the Terai region in Nepal. Ghongis are served with rice and have been a staple food of the indigenous people of Terai for ages. [31] [32] Northeast India (states of Manipur, Tripura and Nagaland). In Nagaland, snails are prepared with axone and pork meat ...
Shell of Physella acuta. Snails in the family Physidae have shells that are sinistral, which means that if the shell is held with the aperture facing the observer and the spire pointing up, then the aperture is on the left-hand side. The shells of Physella species have a long and large aperture, a pointed spire, and no operculum. The shells are ...
Brine draw: Water is directed through a jet pump, which pulls salt water from the brine tank, before the water and brine pass through the resin bed in the normal direction, if co-current, or in the reverse direction, if counter-current. [12] The output of this typically thirty-minute process is discarded through the drain hose.
These fresh water snails are present in aquariums and ponds, as well as in wild areas. They are also commonly referred to as tadpole snails or pouch snails. They eat algae, diatoms and detritus, including dead leaves. The populations are regulated by the abundance of food and space. They are widespread, abundant, and tolerant to pollution.
The Socorro springsnail, scientific name Pyrgulopsis neomexicana, is an endangered species of minute freshwater snail with a gill and an operculum, an aquatic gastropod mollusk or micromollusk in the family Hydrobiidae, the mud snails. This tiny snail previously inhabited a small group of thermal springs in the State of New Mexico, USA. Its ...
The length of the shell varies between 50 mm and 90 mm. The large, imperforate, rather thin shell is conic. The periphery is rounded. The spire is more or less elevated. The sutures are deeply impressed. The seven whorls are well rounded, with close lamellose incremental striae, and corrugated by obliquely descending subtuberculose folds.
The shell is very thin-walled, translucent, shiny and is a pale horn colour. The aperture is wide and oval, and the mouth edge is very thin and brittle. The body color is brown to black. The edges of the mantle extend as finger-like lobes over the exterior of the shell. The tentacles are long, slender and cylindrical, with the eyes at the base.