Human beings breathe using our lungs. Oxygen goes into our blood and carbon dioxide goes out of our blood and into our lungs. When we breathe out we get rid of it. These gasses dissolve in our blood.
In water there is dissolved oxygen. Fish don't have lungs; they have specially developed organs called gills. As water flows over the gills oxygen is absorbed and carbon dioxide can come out of the fish's blood through the delicate membrane of the gills. Some fish are able to pump water over their gills, which means that they can lie on the bottom or stay still in the water. Other fish need to keep moving to pass fresh water over their gills.
The eye is an organ in any animal, parrot fish included.
Fish breathe through gills these are their lungs.
The gills.
Streamlined Bodies
gill
garage
yes
none
The majority of bony fish has swim bladder that keeps them buoyant. The organ is also called gas bladder, fish maw, or air sac.
Most boney fish have a urinary bladder.
The swim bladder is the organ that keeps the fish balanced and upright, is an internal gas-filled organ that contributes to the ability of a fish to control its buoyancy. It is also known as the gas bladder, fish maw or air bladder.
Lateral Line.