Is an octopus a fish? What does an octopus look like?

It's not a fish, it's a marine animal.

Octopods belong to the mollusc phylum Cephalopoda Octopoda and are the general name of the octopods of the octopodidae family. Because it has eight wrists on its head, and there are membranes connected between the wrists, the length is different, and there are two rows of stalkless suction cups on the wrists, so it is called "eight-wristed class". It is a marine animal and does not belong to fish.

Octopuses have 33,000 genes, about 10,000 more than humans, which sets them apart from other invertebrates. Octopuses are very intelligent and can even use tools.

Through genetic decoding, scientists have discovered that octopuses have a set of genes similar to those of humans, which allows them to build neural networks, which explains why octopuses have the ability to learn. Like humans, octopuses have a large brain, a closed circulatory system, and eyes with iris, retina, and lenses.

No, it's invertebrates.

No, octopuses are invertebrates.

Octopus appearance:

The octopus body is short ovate, sac-shaped, and finless; The head and body are not clearly divided, and the octopus has a large compound eye and 8 retractable wrists on the head about centimeters. Each wrist has two rows of fleshy suction cups, with the wrists of short clams about 12 cm long, long clam about cm long, and real clams about cm long.

The base of the wrist is connected to a webbed tissue called a skirt, and its center has an opening. The mouth has a pair of sharp palates and file-like toothed tongues, which are used to drill through shells and scrape their flesh. It is medium in size, widely distributed in tropical and temperate seas around the world, and inhabits caves or crevices on the rocky seabed.

Mode of reproduction:

The breeding time of octopuses in the ocean is generally concentrated in spring and autumn, and the sea water temperature in spring and autumn is about 16. Octopuses like to spawn in snail shells, so they can be used to sink to the bottom of the sea with ropes through red snail shells, and extract and catch them on time. In autumn and winter, they often burrow in the mud and sand of the deep sea.

Octopuses are dioecious. The male has a specialized wrist, called the stem carpus or handover carpus, which is used to place the sperm bag directly into the mantle cavity of the female.

During the breeding season, female octopuses lay eggs, about centimeters long, with a total of more than 100,000, under rocks or in holes. During incubation, the female guards the eggs, cleans them with a suction cup, and agitates the eggs with water. Female octopuses need their larvae to hatch after 4-8 weeks after a single spawning.

Juvenile octopuses are small and adult-like, and after hatching, they drift with plankton for several weeks before sinking to the bottom to hide.

Not fish. Octopuses are mollusks that live underwater, with a short oval, sac-shaped, finless body, and a weak separation between the head and body.

Octopuses are widely distributed in tropical and temperate seas of the world's oceans and can feed on large animal plankton.

Octopus, also known as octopus, octopus, octopus, sitting cricket, stone dwelling, dead cow, carnivorous, feeding on gills and crustaceans.

Octopuses like to spawn in snail shells, and often burrow in the mud and sand of deep seas in autumn and winter, adapting to water temperatures higher than 7 and dying in environments with low salinity.