Common name: Atlantic White-Spotted Octopus

Scientific name: Callistoctopus macropus (Risso, 1826)

General Information

The Atlantic White-Spotted Octopus, scientifically known as Callistoctopus macropus, is a striking cephalopod with a distinctive appearance and intriguing behavior. This species is easily recognizable by its vibrant red coloration adorned with white spots, making it a captivating addition to specialized marine aquariums. However, due to its complex care requirements and intelligence, it is better suited for experienced aquarists.

This octopus is known for its nocturnal habits and preference for solitary living. It is a master of disguise, capable of changing its color and texture to blend seamlessly with its surroundings, a trait that fascinates both scientists and hobbyists alike.

Details

Estimated price
Moderate High price due to specialized care requirements
Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.022 to 1.025
Temperature
24 to 27 °C (75 to 81 °F)
Acidity
pH 8 to 8.4
Average size
90 cm (2′11″)
Care level
Difficult Requires specialized care and a secure tank setup
Diet
Carnivore Prefers live or frozen crustaceans, mollusks, and small fish
Reefsafe
No Not reefsafe; may prey on invertebrates and small fish
Aggression
Semi aggresive Territorial and not suitable for community tanks
Captive bred
No
IUCN Red List
EX
EW
CR
EN
VU
NT
LC

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Mollusks
    Mollusca
  3. Class
    Cephalopods
    Cephalopoda
  4. Order
    Octopus
    Octopoda
  5. Family
    Octopus
    Octopodidae
  6. Genus
    Day Octopus
    Callistoctopus
  7. Species
    Atlantic White-Spotted Octopus
    Callistoctopus macropus (Risso, 1826)
  8. Synonyms
    Octopus alderii Vérany, 1851
    Octopus didynamus Rafinesque, 1814
    Octopus frayedus Rafinesque, 1814
    Octopus granosus Blainville, 1826
    Octopus longimanus Férussac, 1839
    Octopus macropodus San Giovanni, 1829
    Octopus macropus Risso, 1826
    Polypus macropus (Risso, 1826)
  9. Source: GBIF | Global Biodiversity Information Facility

Care

Caring for the Atlantic White-Spotted Octopus requires a dedicated and controlled environment. These octopuses are escape artists, necessitating a secure tank with a tight-fitting lid to prevent any adventurous escapades. They thrive in tanks with plenty of live rock and hiding places to mimic their natural habitat.

Due to their sensitivity to water conditions, maintaining stable parameters is crucial. Regular monitoring of water quality, including ammonia, nitrite, and nitrate levels, is essential to ensure their health and well-being.

Diet and Feeding

In the wild, the Atlantic White-Spotted Octopus is a carnivore, preying on crustaceans, mollusks, and small fish. In captivity, they require a varied diet to meet their nutritional needs. Offering live or frozen foods such as shrimp, crabs, and fish will help replicate their natural feeding habits.

Feeding should be done several times a week, with portions adjusted based on the octopus's size and activity level. Observing their feeding behavior can be an enriching experience, showcasing their problem-solving abilities and dexterity.

Behavior and Compatibility

This species is known for its solitary and territorial nature. They are generally not compatible with other tank mates, as they may view them as prey or become stressed by their presence. Providing a tank dedicated solely to the octopus is recommended to ensure its comfort and reduce stress.

The Atlantic White-Spotted Octopus is highly intelligent, exhibiting behaviors such as exploring its environment, solving puzzles, and interacting with objects. Enrichment activities, like introducing toys or rearranging tank decor, can help stimulate their active minds.

Health and Common Issues

The average lifespan of the Atlantic White-Spotted Octopus in captivity is relatively short, typically ranging from 1 to 2 years. Ensuring a stable and clean environment, along with a proper diet, is key to maximizing their lifespan.

When selecting an octopus, look for active individuals with vibrant colors and no signs of injury or disease. Regular observation and maintenance of water quality are vital to preventing common issues like stress or infections.

Habitat

Naturally found in the warm, shallow waters of the Atlantic Ocean, the Atlantic White-Spotted Octopus inhabits coral reefs and rocky substrates. They prefer environments with plenty of crevices and hiding spots to retreat during the day.

Their natural range includes the eastern Atlantic, from the Mediterranean Sea to the west coast of Africa, extending to the Azores and Canary Islands. Mimicking these conditions in captivity, with stable temperatures and salinity, will help them thrive.