This article is about ramshorn snails as named in the aquarium trade. For the air-breathing snail family in a narrower sense of the term, see Planorbidae.
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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. In a more general natural history context, the term "ramshorn snails" is used more precisely to mean those aquatic pulmonate gastropod mollusks in the family Planorbidae that have planispiral coiled shells.
Ramshorn snails have been bred for the aquarium trade and various color forms have been selected. The two species commonly found in aquariums are Planorbella duryi and Planorbarius corneus, both in the family Planorbidae. One species (Columbia ramshorn, Marisa cornuarietis) is from a totally different family, the Ampullariidae.
Ramshorn snails can sometimes become a nuisance in an aquarium where they have access to an unlimited food supply. However, in properly managed aquaria that are free of excess detritus, they are rarely prolific enough to become a nuisance to the home aquarist.
term ramshornsnail 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...
Marisa cornuarietis, common name the Colombian ramshorn apple snail, is a species of large freshwater snail with an operculum, an aquatic gastropod mollusc...
Anisus vorticulus (lesser ramshornsnail or little whirlpool ramshornsnail) is a species of minute, air-breathing, freshwater snail, an aquatic gastropod...
species include ramshornsnails such as Planorbella duryi, apple snails such as Pomacea bridgesii, the high-spired thiarid Malaysian trumpet snail, Melanoides...
shell and body colours. The "giant ramshornsnail" (Marisa cornuarietis) although not always recognized as an apple snail due to its discoidal shape, is also...
Planorbarius corneus, common name the great ramshorn, is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk...
other frogs, because the trematode's complex lifecycle includes the ramshornsnail and several intermediate hosts such as birds. In a few cases, captive...
apple snail) Marisa cornuarietis (Colombian ramshorn apple snail) Planorbidae species (ramshornsnails) Pomacea diffusa (spike-topped apple snail) Pomacea...
snail, is a species of minute, air-breathing, freshwater snail, an aquatic gastropod mollusc or micromollusc in the family Planorbidae, the ramshorn snails...
in invertebrates. As is the case for Marisa cornuarietis, freshwater ramshornsnail, where androstenedione is converted into 5α-dihydrotestosterone (DHT)...
trematode parasites that sequentially infect freshwater snails in the family Planorbidae (ramshornsnails) as first intermediate hosts, fish and larval amphibians...
native species such as the montane pea clam (Pisidium spp.) and the ramshornsnail (Planorbidae). Efforts are underway at Lake Tahoe to smother the clams...
a tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family Planorbidae, the ramshornsnails and their allies. Appleton...
snail Athearnia crassa Alabama, Georgia, Tennessee, and Virginia Carinate flat-top snail Neoplanorbis carinatus United States Angled flat-top snail Neoplanorbis...
Reclassified as Sphaerium jeholense Gyraulus G. sp. Jianshangou Bed A ramshornsnail Probaicalia P. vitimensis Jianshangou Bed A gastropod Ptychastylus P...
magnificent ramshorn, is a species of small, freshwater, air-breathing snail, a pulmonate gastropod mollusc in the family Planorbidae, the ram's horn snails. This...
air-breathing freshwater snail in the family Planorbidae (2017) Biomphalaria straminea, Ramshornsnail (2022) Candidula unifasciata, Land snail (2021) Chlamys farreri...
Planorbidae, common name the ramshornsnails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs...
possible, reproduce sexually. For example, Ribeiroia ondatrae uses ramshornsnails as its first intermediate host, amphibians and fish as second intermediate...
genus of small tropical freshwater snails, aquatic gastropod mollusks in the family Bulinidae, the ramshornsnails and their allies. This genus is medically...
small tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family Planorbidae, the ramshornsnails and their allies. This...
acorn ramshorn, was a species of small freshwater air-breathing snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails. This...
small air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ramshornsnails and their allies. Species within...
rudd, tench, orfe and koi, but the last require specialized care. Ramshornsnails are helpful by eating any algae that grows in the pond. Without some...
a tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family Planorbidae, the ramshornsnails and their allies. The...
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