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Pisidium is a
genus of very
small or
minute freshwater clams known as pill
clams or pea clams,
aquatic bivalve molluscs in the
family Sphaeriidae, the...
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Pisidium conventus, the arctic-alpine pea clam, is a
species of
freshwater bivalve from the
family Sphaeriidae. The
small (2.2–2.8 mm.) s**** is oval in...
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Pisidium lilljeborgii is a
species of
freshwater bivalve from the
family Sphaeriidae. A
moderately swollen (tumid),
trapezoidal s****. The
umbos are just...
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Pisidium pulc****um , the
iridescent pea mussel, is a
minute species of pea clam, a
freshwater bivalve in the
family Sphaeriidae. The 3.5–4 mm s**** is...
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Pisidium tenuilineatum, the fine-lined pea mussel, is a
species of very
small freshwater bivalve in the
family Sphaeriidae. The
species is
native to Europe...
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Pisidium moitessierianum is a
species of
small freshwater clam. It is an
aquatic bivalve mollusc in the
family Sphaeriidae. This
species is the smallest...
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Pisidium milium is a
species of very
small freshwater bivalve in the
family Sphaeriidae, the
fingernail clams and pea clams. The 3.0- to 4.5-mm s**** is...
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Pisidium pseudosphaerium is a
species of
freshwater bivalve from
family Sphaeriidae. The 2.5-3.2mm s**** is a flattened, regular,
slightly angulated oval...
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Pisidium artifex is a
species of
freshwater clam in the
family Sphaeriidae. It is
endemic to Kenya,
where it is
known only from
Mount Kenya. It
lives in...
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Pisidium hiberni**** is a
species of
freshwater bivalve from the
family Sphaeriidae. The 2.5-3.5mm. s**** is very
inflated (convex)
hence the
common name...
