How do fishes carry out respiration?

Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills.

How does gas exchange occur in bony fishes?

Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. However, bony fish have a single gill opening on each side. This opening is hidden beneath a protective bony cover called the operculum.

How does ventilation occur in bony fish?

How are fish gills ventilated in bony fish? The fish opens its mouth, which lowers the floor of the buccal cavity (the space inside the mouth). The volume inside the cavity decreases, the pressure increases, and the water is forced out of the cavity across the gill filaments.

Do fish get thirsty?

The answer is still no; as they live in water they probably don’t take it in as a conscious response to seek out and drink water. Thirst is usually defined as a need or desire to drink water. It is unlikely that fish are responding to such a driving force.

Where does the respiration of a fish take place?

In aquatic animals such as fish respiration takes place through special respiratory organs called gills, however lung fish respiration takes place through lungs. Gills are present on both the sides of the head of fish. The gills are covered by gill covers also called operculum.

How is the respiration rate of goldfish determined?

Counting the number of breaths each goldfish made in a given minute ensured accurate data. Goldfish breaths can be identified by either counting the number of times the fish opens and closes its mouth or by counting the number of times the goldfish‟s operculum contracts. Once the temperatures of both

What kind of respiratory system does a bony fish have?

All members of the class are bony fishes, residing in both fresh and saltwater conditions. Regardless of the environment they live in, all bony fishes have a respiratory system. Their respiratory system is used for exchanging gases (carbon dioxide and oxygen), just as it is in humans. But instead of lungs, bony fishes have an organ called gills.

How does the operculum change the way fish breathe?

When you’re exercising or excited, you are likely to breathe faster. Just like us, bony fish use their operculum to change the way water flows over their gills. They can change how quickly they breathe as well. As the water is poured into their bowl, the fish move around more.