淡たん水すい

noun, noun which may take the genitive case particle 'no'

fresh water

Refers to water that is not salty, such as river, lake, or rain water. Often contrasted with 海水 (seawater) or 鹹水 (salt water).

See also: 鹹水

• この湖みずうみは淡たん水すいで、泳およぐのに適てきしている。

  This lake is fresh water and suitable for swimming.

• 淡たん水すい魚ぎょは海かい水すい魚ぎょよりも飼し育いくが難むずかしいと言いわれる。

  Freshwater fish are said to be harder to keep than saltwater fish.