This is a picture of a Red Octopus, Octopus rubescens, in captivity. This is a picture that I took myself, of an octopus in my possession.
Author: https://en.wikipedia.org/wiki/User:Taollan82
Source: https://en.wikipedia.org/wiki/File:Redocto.jpg

Octopus rubescens (Commonly the East Pacific red octopus, also known as the ruby octopus, a preferred common name due to the abundance of octopus species colloquially known as red octopus) is the most commonly occurring shallow-water octopus on much of the North American West Coast, and a ubiquitous benthic predator in these habitats.