It's illegal to take fish, alive, from the ocean, so no fish. I sometimes have a snail or some brittle stars for clean up crew. Oh, I've got a bat star, and a little red rock shrimp too. I caught my shrimp about 1/2 mile off shore, but I've seen shrimp like the one I have under the same rocks where I caught my octopus, and the shrimp seems to have no problem keeping out of the octopus's grasp (over 18 months so far). I guess the shrimp has evolved sufficient street-smarts to be able to coexist with the octopus. Most everything else would become octo food.I've never seen you post a thread of your tank before! It looks great. Is the octopus the only living thing besides your sessile inverts in there?
I think that catalina gobies would probably be easy prey for an octopus, since they like to hold still a lot, but I don't know for sure.Would catalina gobies become prey for the octopus? A pair would be nice in there. Can't you get a fishing license?