Question

Do fishes have blood?

Answer 1

Hint:
- Blood is a body fluid found in humans and other animals that transports metabolic waste products away from cells while also delivering essential substances such as nutrients and oxygen.
- The heart's pumping action circulates blood throughout the body through blood vessels.

Complete answer:
-Yes, Fishes do have blood. Fish blood is comparable to that of any other vertebrate. Plasma and cellular (blood cell) components make up this substance. As formed elements, red blood cells (RBC), white blood cells (WBC), and thrombocytes are the cellular components. Water makes up the plasma, which is a liquid part of the body. Proteins, dissolved gases, electrolytes, nutrients, waste material, and regulatory substances are only a few of the solutes that they can dissolve. The portion of the plasma that perfuses out of the capillaries to bathe the tissue is known as lymph. Their blood is also red due to the presence of haemoglobin.
- All blood flows between the blood vessels in the fish blood circulation system, which is a closed-loop system. The blood enters the arteries after the gills have exchanged gases, i.e. oxygen from the water enters the blood, and waste from the blood diffuses into the water.

Note:
- The atrium is a small chamber with thin walls and a few muscles. The atrium receives the deoxygenated blood from the fish's body and pumps it to the ventricle.
- People were not able to keep fish as indoor pets until 1853 in London and the UK when aeration and filtration of water were understood.
- The colour of fish blood is red but In vertebrates, the blue-green colouration of blood plasma attributed to protein-bound tetrapyrrole in some marine fishes is an anomaly.