A few weeks ago I bought 2 Asian moth catfish. They are quite shy and retiring types, until yesterday when I put more microworms in the tank than usual after making them wait a few days for the new culture to take off... this guy is now called Hoover. The other one was hiding under a leaf most of the time but still having a reclined chomp.
http://www.youtube.com/watch?v=0R3rnPhTuQo