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Planorbella trivolvis, an air-breathing ramshorn snail. 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.
Lymnaea stagnalis. (Linnaeus, 1758) [2] Lymnaea stagnalis, better known as the great pond snail, is a species of large air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae. The great pond snail is a model organism to study parasitology, neurology, embryonal development and genetic regulation.
Reproductive system of gastropods. Entwined everted penises of a pair of mating hermaphrodite slugs in the species Limax maximus. The reproductive system of gastropods (slugs and snails) varies greatly from one group to another within this very large and diverse taxonomic class of animals. Their reproductive strategies also vary greatly.
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. In a more general natural history context ...
Viviparidae. Viviparidae, sometimes known as the river snails or mystery snails, are a family of large aquatic gastropod mollusks, being some of the most widely distributed operculate freshwater snails. This family is classified in the informal group Architaenioglossa according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.
Vittina natalensis, commonly known as spotted nerite or zebra nerite, [ 2][ 3] is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites. [ 4] It returns to brackish waters to reproduce. This is a popular aquarium snail, sold because it looks attractive and eats algae in ...
The African openbill is a stork measuring 80–94 cm (31–37 in) and weighing 1–1.3 kg (2.2–2.9 lb). [6] The species does not exhibit any major sexual dimorphism, although the males are slightly larger than the females and have a longer and heavier bill. [2] The adult bill is between 135–196 mm (5.3–7.7 in) in length, [7] brownish in ...
The northern crested newt, great crested newt or warty newt (Triturus cristatus) is a newt species native to Great Britain, northern and central continental Europe and parts of Western Siberia. It is a large newt, with females growing up to 16 cm (6.3 in) long. Its back and sides are dark brown, while the belly is yellow to orange with dark ...