Movie 2

Dynamic digital endocast of the mouth cavity of a channel catfish (Ictalurus punctatus, individual Cat5) during a suction feeding strike. The endocast, shown by itself (left) and with the skeletal animation (right) was used to calculate the volume of the mouth cavity at each frame (see Methods for details), moving relative to the body plane, i.e., the fish's body. The animation was created from X-ray videos filmed at 300 Hz, but it has been slowed down about 12 times in this movie.