Question

Is the shark a fish or a mammal?

Answer 1

Sharks are a species of fish.

Sharks:

1. They are not mammals because they lack all of the characteristics that define mammals.
2. They don't have warm blood, for example.
3. Sharks are classified as fish, despite the fact that, unlike most fish, their skeleton is made of cartilage.
4. Sharks eat smaller fish because they are carnivores. Sharks, on the other hand, are opportunistic feeders who will eat anything that has the potential to kill them.

Pisces:

1. The main distinguishing feature of Pisces organisms is that they have fins on their bodies.
2. They have a very long body with 6 – 15 pairs of gill slits for the process of respiration.
3. They're commonly known as fish.
4. Because they lack jaws, they have a sucking and circular mouth.
5. Because they are aquatic organisms, their bodies are completely covered with fine scales and are very tough to touch.
6. Some Pisces have a cartilage endoskeleton, and the vertebral column is soft and made of cartilage.
7. The notochord is present on their body throughout their life.

Mammalia:

1. Mammalia is the class of animals that includes mammals.
2. Mammalian species are among the most evolved vertebrate species in the animal kingdom.
3. They have advanced characteristics that set them apart from all other animals.
4. The presence of mammary glands, which they use to feed their young, distinguishes them.
5. These are warm-blooded, hairy creatures with mammary glands to feed their young.
6. Mammalian hearts have four chambers.
7. Mammals can lay eggs as well. They are known as viviparous.

Hence, we can conclude that sharks are fishes. Sharks are not mammals because they lack all of the characteristics that define mammals.