do fish urinate?

Answer 1

Sort of. They don't technically drink water, they absorb it through their scales via osmosis, and it is expelled in the same way.

Answer 2

Yes, they do. From Wikipedia: http://en.wikipedia.org/wiki/Fish#Excretory_system


Excretory system
As with many aquatic animals, most fishes release their nitrogenous wastes as ammonia. Some of the wastes diffuse through the gills into the surrounding water. Others are removed by the kidneys, excretory organs that filter wastes from the blood. Kidneys help fishes control the amount of ammonia in their bodies. Saltwater fish tend to lose water because of osmosis. In saltwater fish, the kidneys concentrate wastes and return as much water as possible back to the body. The reverse happens in freshwater fish, they tend to gain water continuously. The kidneys of freshwater fish are specially adapted to pump out large amounts of dilute urine. Some fish have specially adapted kidneys that change their function, allowing them to move from freshwater to saltwater.

Answer 3

Yes

Answer 4

All vertebrates generate uric acid waste product which is excreeted.
Fish are like birds in this regard. Urine is excreeted along with the
feces through the anus, rather than through the urethra as in mammals.

Answer 5

kinda of. They use a process called Osmoregulation. Osmoregulation is the control of the concentration of body fluids. It is a way the fish disposes of its wastes...hope i helped!

Answer 6

yes

Answer 7

With the amount of water they take on I should hope so!

Answer 8

Yes, a lot. They don't have to conserve water.

Answer 9

i am really not being mean but, who cares if fish urinate?LOL I hope you find your answer and thanks for the smile!

Answer 10

yes