An octopus (pl.: octopuses or octopodes [a]) is a soft-bodied, eight-limbed mollusc of the order Octopoda (/ ɒ k ˈ t ɒ p ə d ə /, ok-TOP-ə-də [3]). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids.

Pet Octopus You Can Keep in Aquarium. While it may sound intimidating, keeping and caring for a pet octopus isn’t too difficult. You only need to consider the animal’s basic requirements and make sure it has all the necessary conditions to remain comfortable and healthy in its habitat.

2025年1月25日 · An octopus is any eight-armed cephalopod mollusk of the order Octopoda. The true octopuses are members of the genus Octopus, a large group of widely distributed shallow-water cephalopods. Learn more about the anatomy, …

2023年6月6日 · Aquarium Fish; Guide to Keeping a Pet Octopus: Care, Legality, & Enrichment. Experienced enthusiasts find the octopus to be a fun species to keep in a dedicated aquarium setup, though they do require a high level of care.

Octopus, a cold-blooded mollusk belonging to the Cephalopoda class, grouped with cuttlefish, nautiloid, and squids, has around 300 species. These giant-sized invertebrates, with their unique appearance, have been immensely popular as sea monsters in mythology, also being a part of several literary works.

2022年12月27日 · An octopus is one of the most satisfying aquatic species to raise in a home aquarium, but it is difficult. In addition to their behavior and ability to learn, we are mesmerized by their incredible shape- and color-changing powers.

Despite their unique characteristics, octopuses are often mistaken for fish. However, they are not fish, but rather members of the class Cephalopoda. This classification is based on their physical characteristics and evolutionary history.

2024年9月23日 · Octopuses are molluscs, part of a group called cephalopods, which translates from ancient Greek to "head-foot" and includes squid, cuttlefish, ammonites and nautiluses. 1 Octopuses share a close relation with some of the oldest creatures in the Earth’s waters, with an evolutionary history that spans approximately 480 million years. 2 Cephalopods...

Octopuses exhibit intriguing behavior, surprising intelligence, and incredible shape- and color-changing abilities in the aquarium—as well as tragically short lifespans. An octopus is one of the most fascinating and rewarding marine creatures you can keep in the home aquarium.

Octopuses live in coastal marine waters and spend much of their time in dens—small holes and crevices in rocks and coral. They are generally solitary and territorial. Moray eels, fish, seals, sperm whales, sea otters, and many birds prey on octopuses.