Family Planorbidae
Planorbidae is a family in the order . Browse 6 named species recorded in this family, or open an individual profile for its available identification and natural-history information.
Species in Planorbidae (6)
White-lipped Ramshorn
Anisus leucostoma
Height 1.5 mm. Width: 5 to 7 mm. A small air-breathing freshwater snail. The shell is slightly glossy and rather thick, with close transverse striae, and is of a light horn colour. It has 6 to 6.5 rounded whorls which are evenly arranged in one plane
Whirlpool Ramshorn
Anisus vortex
Shell size: 7-10mm. This is a small snail is usually pale brown with 6 to 7 tightly coiled whorls. The shell is very thin and flat with a sharp keel at one edge and the outer shell wall noticeably angled away from this keel. Freshwater ponds and stre
Smooth Ramshorn
Gyraulus laevis
3-6mm in diameter, 1-1.5mm thick. Rounded whorls with deep sutures and without a keel. The aperture (mouth) is very rounded but offset from the previous whorl. Despite the name, it usually has radial striae but lacks the spiral striae seen in Gyraulu
Flat Ramshorn
Hippeutis complanatus
3-5mm in diameter. A small, pearly-looking ramshorn that is lens shaped with a smooth keel around the middle. The aperture (mouth) is very narrow and heart-shaped. The shell is thin and fragile with a grey, silky appearance (though not shining). Unle
Great Ramshorn Snail
Planorbarius corneus
Diameter 30 mm. The shell coils in a flat spiral with a flared mouth. Albinos are common and these have a red, rather than black, body due to the blood showing through the skin. Inhabits small, still, weedy ponds and drains. These snails graze on alg
Keeled Ramshorn
Planorbis carinatus
The width of shell of this species is 9 to 15 mm. The shell has a noticeable keel at the center of the periphery of the body whorl. Similar to Planorbis planorbis which has a keel along one side of the shell so that in profile it looks like it has be