Live Pygmy Octopus for Saltwater Reef Fish Tank Aquarium Live Pygmy Octopus for Saltwater Reef Fish Tank Aquarium by AquaStockers 2 customer reviews Currently unavailable. We don't know when or if this item will be back in stock. Care Level: Very Easy | Size: 3-6 inches Diet: Meaty Compatibility: Not safe with small fish or invertebrates 100% Live Arrival Guarantee. See Description for details Orders over $149 Receive Free Shipping. Build your order from our store and save.