The octopus is not a fish, it is a kind of mollusks, aquatic organisms, but is not a fish, and, octopus and squid (cuttlefish) are only similar in shape, the same family and different species

The octopus, also known as the stone residence, octopus, sitting octopus, stone suction, looking at the tide, dead cow, belongs to the phylum of mollusks, cephalopods, octopus family of eight carpal orders (Octopoda), the octopus genus. The octopus has eight carpal legs with many suction cups on them; sometimes it spews out black ink to help escape. Some octopuses have quite a developed brain and can distinguish themselves in the mirror; they can also get out of mazes designed by scientists and eat crabs in the maze. Also works as an artist article obsessive.