has anyone had any experiance with keeping fish with there own "defences" in tanks with octopus, for example, a fish that was poisonis like a lion or scorpion fish, would the octo no not to try to eat it? Also, if there was a porcupine fish, would that maybe be ok because of its ability to expand? i was also thinking that moray eals might work because most octopus would be to large for the eals to eat and i think that it would be hard for an octopus to ealt an eal because of its size. id realy like to no what you think about this