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An aquarium ramshorn snail. The term ramshorn snail or ram's horn snail is used in two different ways. In the aquarium trade it is used to describe various kinds of freshwater snails whose shells are planispiral, meaning that the shell is a flat coil. Such shells resemble a coil of rope, or (as the name suggests) a ram's horn.
Planorbarius corneus is the largest European species of ramshorn snail (family Planorbidae), with a shell typically measuring 35 millimetres (1.4 in) across when fully-grown. [4] The 10–17 by 22–40 millimetres (0.39–0.67 by 0.87–1.57 in) coiled shell has between 3 and 4.5 rounded whorls with deep sutures, the last whorl predominating ...
The shell of Spirula is extremely light in weight, very buoyant, and surprisingly durable; it very commonly floats ashore onto tropical beaches (and sometimes even temperate beaches) all over the world. This seashell is known to shell collectors as the ram's horn shell or simply as Spirula.
Drawing of the shell of Planorbis planorbis. Upper image: Lateral view showing the profile of the shell. Lower image: Umbilical view; this side is carried uppermost in the living snail. This species, like all planorbids, has a sinistral shell. The width of the shell is 15 – 20 mm. The keel on the periphery of the shell is near the edge ...
Planorbella duryi, common name the Seminole rams-horn, is a species of air-breathing freshwater snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails. The species is endemic to Florida and is found frequently in home aquariums.
The lesser ramshorn snail is a very small species growing to a maximum diameter of 5 mm (0.2 in). The shell lacks a keel and the peripheral angle is relatively prominent, with a slender, narrow periostracal fringe. [3]
Ramshorn Snails If you’re after another algae eater, look no further than a Ramshorn Snail. These aquatic animals are around one inch in diameter so will thrive in any size aquarium, big or small.
Segmentina nitida, the shining ram's-horn snail, is a species of small, air-breathing, freshwater snail, an aquatic gastropod mollusc or micromollusc in the family Planorbidae, the ramshorn snails. Description