Translations:Fish/56/en: Difference between revisions

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Message definition (Fish)
Most fish release their nitrogenous wastes as [[ammonia]]. This may be excreted through the gills or [[filter (chemistry)|filtered]] by the [[kidney]]s. Salt is excreted by the rectal gland. Saltwater fish tend to lose water by [[osmosis]]; their kidneys return water to the body, and produce a concentrated urine. The reverse happens in [[freshwater fish]]: they tend to gain water osmotically, and produce a dilute urine. Some fish have kidneys able to operate in both freshwater and saltwater.

Most fish release their nitrogenous wastes as ammonia. This may be excreted through the gills or filtered by the kidneys. Salt is excreted by the rectal gland. Saltwater fish tend to lose water by osmosis; their kidneys return water to the body, and produce a concentrated urine. The reverse happens in freshwater fish: they tend to gain water osmotically, and produce a dilute urine. Some fish have kidneys able to operate in both freshwater and saltwater.