Squid, octopus, whales, these are not fish, why are they all called fish?

Squid, octopus, and whales are not fish, but they are all called fish, but it is actually just a habit, because these animals live in the water and have the same commonality as fish, so in order to make it easier for everyone to understand and accept, they use fish, but in fact they are not fish. Whales are a type of mammal.

Whereas, both octopus and squid are mollusks that do not have a spine and it is an animal that belongs to the class of squid.

Squid and octopus Squid and octopus are actually both brachiopod seafood, which is not a fish, but the appearance is relatively similar. And it is very rich in nutritional value, in addition to containing protein, there are many trace elements, such as calcium, iron.

and potassium.

And so on, in addition to selenium, iodine and so on.

Squid and octopus have a lot of antennae, and they usually feed on small fish and shrimp, and octopuses and squid are very well hidden and explosive, and they will suddenly attack food. And when it is in danger, it will squirt ink. Not only can you create a fog to hide yourself, but you can also escape quickly.

Whales, whales, not to mention fish, are huge and mammals. Whales are generally dolphins.

Animals such as sea lions and seals feed on. Small fish and shrimp can also become whale food, whales are also relatively ** animals, its size is very large, the largest whale is the blue whale, which can reach more than 100 tons, and the more ferocious is the killer whale.

Even great white sharks.

Neither is a match for killer whales.

Therefore, although the whale is an animal that lives in the sea and its name is also associated with "fish", the whale survives in the water and parades in a way similar to the advantages of fish, so it is related to the fish when it is named, but the name is just a name, and does not represent its species, just like cats and tigers actually belong to the feline family.

But the tiger looks much more ferocious, and the name has nothing to do with the species.

Because it's a naming habit of humans. These creatures all live in the water and have similar habits to fish, so they are all called fish.

Because people don't classify them very professionally when they come up with names, they are all according to daily habits, so even if they are not fish, they are also called a certain fish because they live in water.

It is customary to refer to all creatures living in the water as fish, and whether or not the essence is a fish is not something that ordinary people consider, and professional researchers generally give popular names for the sake of easy understanding.

Squid are not octopus, they are two completely different species. Octopuses are mollusks of the octopus family, the largest family of cephalopods, and can be divided into the subfamily Abyssidae. Whereas, the squid is a mollusk, an animal of the mollusc phylum Cephalopod Sheath subclass Decabrachida Squid Eye-opening suborder.

Squid, also known as soft fish and spear squid, has a conical body, pale body, light brown spots, a large head, 10 tentacles in front, and a triangular fin at the end of the tail, often cruising in groups in the ocean at a depth of about 20 meters. It feeds on krill, sardines, silverfish, small male fish, etc., and is itself the prey object of ferocious fish.

Squid, although it is customary to call them fish, is not actually a fish, but a mollusk that lives in the ocean, with a slender, long conical body and a suction cup at the tip. Squid has two gills in its body as a respiratory organ.

Octopus and squid are not a type of fish.

Octopus (octopus): is the common name for 252 species of marine mollusks in 26 genera of the octopus family.

Octopuses are the largest family of cephalopods, which can be divided into bathypolypodinae, eledoninae, graneledoninae and octopodinae.

Squid, also known as soft fish and squid, is an animal of the mollusc phylum Cephalopoda Sheath subclass Decachiopod Squid Eye-opening suborder.

The body of the squid is conical, pale, with light brown spots, a large head, 10 tentacles in the front, and a triangular fin at the end of the tail, and often swims in groups in the ocean at a depth of about 20 meters.

No! Also known as cuttlefish, cuttlefish, it is the most outstanding smokescreen expert in the class of casters. SepioideaA marine cephalopod mollusc, closely related to octopus and spear squid.

It is characterized by a thick calcareous inner shell (squid bone, cuttlefish bone or sea cricket). There are about 100 species with a body length.

None of them are fish, they belong to mollusks. The octopus has a round belly and is also known as an octopus; The belly of the squid is long.

Neither octopus nor squid are fish, but people are used to calling the animals in the water fish. The same genus mollusks, and shellfish, snails are close relatives. The nervous system is well developed, so it is said to be an intelligent lower animal.

The two are similar in body shape and structure, but there are still big differences. Squid swims in the middle layer of the water with a fusiform body; Octopuses are mostly found underwater. The body is round.

Squid (squid) is generally eaten. Octopuses are smart, difficult to catch, and not as fleshy as squid.

Octopus and squid belong to two varieties of the same subject.

They both belong to the class Cephalopods, and their differences are:

One: Squid: Squid, also known as soft fish and squid, has high nutritional value and is a valuable seafood. It is basically the same as mollusc brachiopod seafood such as cuttlefish and octopus in terms of nutritional function, which is rich in protein, calcium, phosphorus, iron, etc., and is very rich in trace elements such as selenium, iodine, manganese, copper and other trace elements.

Fish belong to the vertebrate subphylum in the phylum Chordates, octopus belongs to the phylum Mollusca, Cephalopod Octopod, Squid is a mollusk phylum Cephalopod Sheath Suborder Ten Brachial Tube Squid Open Eyes Suborder, so.

Octopuses and squid are not fish.

Octopuses and squid are called fish but not "fish", and the names of these creatures are too confusing.