Aquarium guide
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Planorbis
 

Planorbis

These are water snails with a flattened shell. Their orange-red body contains plenty of red globules to establish a high oxygen concentration, as they live in environments lacking in oxygen and breathe through their lungs, sometimes rising to the water surface. They graze on both short and filamentous green algae, whose growth they help to restrict. Size: 3-4 cm.

Planorbis

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ТОНС (Tons) Эдгарс (1917-67) , латышский дирижер, народный артист Латвии (1962). С 1947 дирижер, с 1954 главный дирижер Латвийского театра оперы и балета, в 1963-66 - симфонического оркестра Латвийского радио и телевидения.