Checkers passed during the night.
Whereas Chubbs stopped eating suddenly, Checkers hasn't hunted for 4 or 5 days, and during that period would only take a couple bites of frozen krill when encouraged to do so. He had been just as active over the last week however perhaps a bit more easy to surprise. My parents were in town and disappointed they didn't get to see the feeding tentacle!
We're very happy with the experience of keeping cuttles, although I think we were expecting to have a little more time with them. We'll definately keep them again in the future, although I think we're going to get an octopus next.