common Atlantic octopus vs Japanese pygmy octopus

Octopus vulgaris compared with Octopus parvus

Key Differences

• common Atlantic octopus is Not Evaluated while Japanese pygmy octopus is Data Deficient.

Taxonomic Classification

Rank	common Atlantic octopus	Japanese pygmy octopus
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Mollusca (động vật thân mềm)	Mollusca (động vật thân mềm)
Class same	Cephalopoda (động vật chân đầu)	Cephalopoda (động vật chân đầu)
Order same	Octopoda (Bạch tuộc)	Octopoda (Bạch tuộc)
Family same	Octopodidae (Common Octopuses)	Octopodidae (Common Octopuses)
Genus same	Octopus (Octopuses)	Octopus (Octopuses)
Species	Octopus vulgaris	Octopus parvus

Evolutionary Relationship

common Atlantic octopus and Japanese pygmy octopus share a common ancestor at the Genus level: Octopus. (Octopuses)

Conservation Status

common Atlantic octopus

NE — Not Evaluated

Trend: Stable →

Japanese pygmy octopus

DD — Data Deficient

Physical Characteristics

Attribute	common Atlantic octopus	Japanese pygmy octopus
Diet	Carnivore	—
Average Lifespan	2 years	—
Average Length	60 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

common Atlantic octopus

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Chile, Denmark, Norway, Portugal, and Sweden.

Japanese pygmy octopus

common Atlantic octopus

One of the most studied invertebrates in neuroscience and behavioral biology, common octopuses inhabit rocky reefs and seafloors in tropical and temperate coastal waters globally. Highly intelligent with distributed nervous systems — two-thirds of their 500 million neurons reside in their arms — they demonstrate tool use, problem-solving, and individual personalities. Masters of camouflage, they change skin color and texture in milliseconds. They have three hearts, blue copper-based blood, and extremely short lifespans of 1–2 years.