Bryan,
great fotos! and Nice approach to making the eel comfy.
I have one since over a year, now, we call Elvira. Started out black and is now in the blue phase. I can concur with your results, as a frenzy does seem to stimulate the capture/drag-away/swallow instinct. I have quite a few voracious fish in my aquarium and Elvira had to learn to compete, which is not really in the character of these fish. They are really quite gentle and, I get the impression...blind! Like you said, they stare off into the wild blue and ignore their surroundings until...
Mine was pretty easy to get eating. The first week was a no goer, but suddenly, as all the fish were chasing after food, Elvira snatched a small Anthias (which had been ailing from cyanide(?) poisoning) and dragged it into its den! I was speachless :eek1: . After that, I tried strips of frozen red snapper and we were off! You mentioned that your fish showed a preference for goldfish, which are similarly coloured as Anthias. Perhaps this is a natural food for them?
Interesting how your eel also reacts to a long stick-type object. I was sticking the frozen fish onto a bamboo stick and waggling it in the front of the den. Elvira seemed to accept the stick as a competetor and would always aim for the point where the fish and stick met. It would have been much easier to grab the loose end of the fish and play tug-o-war, but instinct seems to dictate a head to head approach, although, if the other fish start playing with her food, she tends to let it go for a moment and then reapproach to snap it and drag it away. For an eel, she is pretty polite and shy!
I am toying with the idea of getting another eel, as company may be closer to their natural lifestyle. I have heard that this can stimulate a colour change in one of the eels, apparently a classic protandic-hemaphrodite developement. If I get that far, I'll report back.