A week ago I purchased a new octopus, which I believe is a vulgaris. He is normally red in color and has a body about 2 inches long. While he seems to be adjusting to his new home, he only comes out when it is dark. I realize this is normal behavior for an octopus, but I was spoiled by my previous octo which was quite active with the lights on and was very interactive whenever I near the aquarium. I'm wondering if anyone else had this problem and what they did to "see" their octo. When the lights are off, I can shine a flashlight on the tank and he is out and quite active. He seems to be eating the ghost shrimp I have put in the tank, but has not eaten two small hermit crabs I put in there for him to eat. I have also put pieces of fresh prawn that I believe he has eaten as well. Any suggestions on this matter will be greatly appreciated.