Caribbean Reef Octopus

Caribbean Reef Octopus

Octopus briareus

advancedsemi-aggressivesaltwaterOctopus$$$Not Reef Safe

Min Tank Size

53 gal

Max Size

19.7"

Temperature

75–79°F

pH Range

8.1–8.4

Lifespan

1-3 years

Diet

Carnivore

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Overview

The Caribbean Reef Octopus (Octopus briareus) is a advanced saltwater species known for its blue-green (changes color rapidly) coloration. Nocturnal. All levels.

Origin & Appearance

Origin: Caribbean.

Colors: Blue-Green (changes color rapidly).

Body Shape: Cephalopod (soft-bodied). Typical adult dimensions: 50.0 x 40.0 x 20.0.

Sexual Dimorphism: Moderate; males have hectocotylus arm.

Tank & Water Requirements

Min Tank Size53 gallons
Temperature75–79°F
pH Range8.1–8.4
Water Hardness (GH)dKH 8-12
Bioloadhigh
Oxygen Demandhigh
Plant Safeyes
Aquarium PositionAll levels

Behavior & Activity

Nocturnal reef walker; crawls using arms; rapid color and texture changes; jet swimming escape; intelligent den-builder

Speed: 55/100Aggression: 5/10nocturnal

Breeding

Terminal; dies after breeding

Common Diseases

💊 Senescence after breeding💊 escape artist

Expert Notes

Nocturnal; most commonly kept octopus species

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