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They are given off as ammonia.

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13y ago
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6mo ago

Most fish excrete nitrogenous waste in the form of ammonia. Ammonia is highly toxic, but fish eliminate it primarily through the gills and some through the urine. Some fish species, particularly those living in environments with low water availability, convert ammonia to a less toxic form, such as urea or uric acid, before excreting it.

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Q: What is the form of nitrogenous waste that most fish give off?
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Continue Learning about Natural Sciences

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