Back in highschool, in prehistoric times, I had a running incident of feeders disappearing from my holding vat. I was sure my brother was feeding out my preds to show off to his friends. I accused him, he denied it, blah, blah, blah...
After a few weeks of these continuing disappearances, I happened to come home early from school (nearly graduation) and noticed what looked like a leak from one of the saltwater tanks. Closer examination revealed a wet trail going from the tank to the feeder vat.
It turned out that my mediterranean octopus figured out that it could crawl out of its tank, gorge itself on feeders, and make it back to its tank without any adverse effects. I guess the trail was dried out enough to not be noticed by the time I usually arrived home.
I clamped the octos cover down so it couldn't forage for itself. At least I had an answer to why it was off its feed lately.
BTW, I still have yet to apologize to my brother for accusing him of feeder theft.