Thanks for the compliments.
First, here's the video in MUCH better quality:
http://www.cafe-kreativ.de/connor/fish/kubotai.mp4
(h.264 codec @1024kbs, mp3 audio, ASF container, ~7.5MB, plays fine in VLC 0.8.6d)
You can now actually recognize the food (small greyish crumbs) .. watch the last loach taking a walk closely and you can see (and hear!) it getting one of the food pellets!
@Mark in Vancouver
My loaches would be honoured to be added to this site.

I suggest you download the better quality clip and add it directly to loaches.com (my link may not be working forever).
Some screenshots:

'I ought never to act except in such a way that I can also will that my maxim should become a universal law.'