I bought an octo from my lfs about 4 days ago. I have it in a 30 gallon tank. I have tried feeding it frozen fish and shrimp (thawed), live shrimp, and there is even a domino damsel in the tank but it won't eat anything. It hasn't even tried to go for the damsel. The tank has been running for about 3 months now. Ever since I put the octo in the tank it has refused food and it frequently curls and twists its tentacles. For the past day it has pretty much just stayed in one or two spots for hours at a time. I'm not sure what is wrong with it or what i need to do to keep it alive. Any suggestions will be great!!