- 1 What are fish considered?
- 2 What fish are actually mammals?
- 3 Is whale a fish or mammal?
- 4 Is a shark a fish or a mammal?
- 5 What fish is not a mammal?
- 6 Is a penguin a mammal?
- 7 Which is the world’s largest fish?
- 8 Why is whale mammal?
- 9 Is Octopus a fish?
- 10 Why is whale a mammal and not a fish?
- 11 What color is shark blood?
- 12 What is the biggest animal on earth today?
What are fish considered?
Fishes are a group of animals that are completely aquatic vertebrates that have gills, scales, swim bladders to float, most produce eggs, and are ectothermic. Sharks, stingrays, skates, eels, puffers, seahorses, clownfish are all examples of fishes.
What fish are actually mammals?
There are 75 species of dolphins, whales, and porpoises living in the ocean. They are the only mammals, other than manatees, that spend their entire lives in the water.
Is whale a fish or mammal?
Whales are a member of the cetacean family, and as such, despite being wholly water-resident, whales are mammals, not fish.
Is a shark a fish or a mammal?
Sharks are fish. They live in water, and use their gills to filter oxygen from the water. Sharks are a special type of fish known because their body is made out of cartilage instead of bones like other fish.
What fish is not a mammal?
Sharks, rays, eels and sea horses are all 100% fish, whereas whales, dolphins, starfish and jellyfish are not fish. So what makes fish different from other animals? Fish are unique in that they have a combination of gills and fins and that they live only in the water.
Is a penguin a mammal?
Like other birds, penguins have feathers. Penguins are fish, mammals, or amphibians because they live in water, on land, or both. Penguins are birds, even though they spend time on land and in water. Their motion in the water more closely resembles flying than the swimming motion used by other animals.
Which is the world’s largest fish?
Just as the blue whale (Balaenoptera musculus) is the largest living mammal*, the whale shark is the largest species of any fish, known to reach more than 40 feet in length.
Why is whale mammal?
What Makes a Whale a Whale? Whales are mammals which means that, like humans and other land mammals, they have three inner ear bones and hair, they breathe air, and the females produce milk through mammary glands and suckle their young.
Is Octopus a fish?
An octopus is a mollusk. This is where octopi go down the “mollusk” path and fish down the “chordata” path. To put it in simpler terms, this why an octopus has no bones — no skeleton — it is an invertebrate. A fish has a backbone and a skeleton — it is a vertebrate.
Why is whale a mammal and not a fish?
Mammals all are warm-blooded animals, they breathe air, have hair, and moms feed their babies milk from mammary glands. Whales actually do all of these things! Whales are warm blooded, which means they keep a high body temperature that does not change in the cold water. So whales are indeed mammals and not fish!
What color is shark blood?
Since sharks have no bone tissue, they also lack red bone marrow — which, as you point out, produce red blood cells in most vertebrates.
What is the biggest animal on earth today?
The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the biggest animal on the planet, weighing up to 400,000 pounds (approximately 33 elephants) and reaching up to 98 feet in length.