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Do fish pee

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From various sources:

  • Like most living vertebrates, fishes do in fact pee. Fishes have two kidneys located above their swim bladder that filter waste from their blood.
  • Fish pee just like humans do to excrete metabolic wastes. Some species produce a concentrated, somewhat yellow-hued urine
  • The fish is breathing into the left side of the box through its gills, and releases faeces and urine through its vent into the right side.
  • Since they live in water, most fish will pee a little bit almost constantly. 
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by 🔥 Spellbinder (107k points)
I think they do but the urine is mixed with the turd ig (kinda like birds)
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by ⚡ Energy Weaver (229k points)
yes they do, they have a digestive system so they need a way to get rid of the waste from their bodies

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