i have a small/baby california 2-spot octopus that, recently, has blown me away at how much it's been out. for weeks it was crawling around on the glass, looking out...swimming around, chasing the 1/2 dozen shore crabs i have in there even if he didn't catch them. i recorded about 5 hours straight that he was out at one point. but, for the last 3 days he's been in his hole, hiding in the rock. my water parameters are perfect, remembering the slightly-higher salinity, my water is the same as it was when he was active and i've done significant water changes with an ammonia level of 0! any ideas?