Common name: Two-spotted octopus

Scientific name: Octopus bimaculatus Verrill, 1883

General information

The Two-spot Octopus, scientifically known as Octopus bimaculatus, is a fascinating species for advanced aquarists. It is known for its intelligence, problem-solving abilities, and the characteristic blue rings or spots on each side of its head, which give it its common name. This species is often studied for its complex behavior and neurological physiology.

Details

Recommended minimum tank volume
200 liter (53 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
20 to 24 °C (68 to 75 °F)
Acidity
pH 7.8 to 8.4
Average size
45 cm (1′6″)
Care level
Moderate to easy Needs secure lid to prevent escape
Diet
Carnivore Enjoys live or frozen shrimps
Reefsafe
No May prey on tank mates
Aggression
Semi aggresive Can be interactive but predatory
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Mollusks
    Mollusca
  3. Class
    Cephalopods
    Cephalopoda
  4. Order
    Octopus
    Octopoda
  5. Family
    Octopus
    Octopodidae
  6. Genus
    Octopus
    Octopus
  7. Species
    Two-spotted octopus
    Octopus bimaculatus Verrill, 1883

Care

Octopus bimaculatus requires a species-specific tank setup with secure lids to prevent escape, as octopuses are known for their Houdini-like abilities. The tank should have plenty of hiding places and live rock to simulate a natural environment. They are sensitive to water quality, so excellent filtration and regular water changes are crucial.

Reproduction

In captivity, breeding Octopus bimaculatus can be challenging. Males use a specialized arm called a hectocotylus to transfer sperm packets to females. After mating, females lay clusters of eggs and tend to them until they hatch, after which the female typically dies, a phenomenon known as semelparity.

Habitat

The natural habitat of the Two-spot Octopus includes rocky reefs and crevices along the coast of California and the Gulf of California. They are benthic creatures, meaning they live on the ocean floor, where they hunt for crustaceans and bivalves.