Hi! I haven't really been on the forums in a very long time after my last octopus, Kim Jong Un, escaped and died. I got myself a new octopus and named him Karl Marx, and he have seemed to thrive a lot. I'm almost certain it's a male abdopus, possibly aculeatus, but not sure about that. Hes been hunting my scampi-on-stick as well as grabbing food from a bottle, and has eaten well. However the past 3 days hes been hiding inside a vase and covering the entrance with shells. He will grab the food, but he won't take it if I challenge him by pulling the food away, and he isn't eating much. Also earlier he would grab on to the stick and fight it (or rather fight it's buoyancy) so I couldn't retrieve it until 15 mins after when he got bored. Now he tries to grab the stick, but let's go at once I pull it away. On top av that I noticed that part of his first or second arm from the left was like a stub. So I now know something is wrong, but I have no idea what or what I can do about it. Any ideas? What should I check for? I don't have access to a testing kit except for the salinity which is fine.