Just in case anyone wonders, tank is sealed tight, set up in a low light area and I'm keeping artificial lighting to a minimum. There are currently some snails and hermit crabs in with it. I have offered it silversides and krill, but it has not accepted any yet. I remove any uneaten food and am checking water chemistry every other day right now just to be sure it stays stable.
It's great to meet you! Interesting that you mentioned that. I will double check the next time it's out, but I definitely noticed that some tenticles appeared larger and/or longer than others. I just attributed it to the way it's able to manipulate it's body. Could that be a possible way to identify it? Thanks for taking the time to write!