OctoMonkey, I agree the purchase was impulsive. I haven't made such an impulsive purchase in many, many years. However, the creature was living in a reef set-up eating only goldfish. It was constantly floating to the top of the tank without much control. Since being in my tank, it has made vast improvements. It moves around the tank with little difficulty, and no longer has the out of control buoyancy issues it had in the store tank. I don't have a tank that is 4 feet deep (mine is 36 inches deep), it is in it's own tank, the water is maintained around 65 degrees (actually what I've read said they can handle quite a range of temperatures - remember they swim to the reef during the evenings). It is eating fresh (frozen) crab legs, shrimp and it will even eat mysis - not to mention the very occasional gold fish. I found that it did not like bright aquarium lights, so I have only a single Actinic blue bulb on the tank. I've had it 4 weeks; the pet shop had it 3 weeks. Everyday it seems to be getting tamer. In fact, when I'm trying to do maintenance on the tank it keeps following my hand around.
OctoMonkey, looks like I've met most of your conditions, do you have any practical advice on keeping it in good health. Or, was your reply to simply point out that I should have let it die in the dealerââ"šÂ¬Ã¢"žÂ¢s tank? (FYI, the dealer has no intention of purchasing more and making them for sale. They found them too difficult to care for in the store.)