Actually,like in the wild,a Barracuda has to be faster than its prey to overtake it.The Cuda is climbing on the tail of the mustang and chewing on it so it has to be going faster to do so.
Had to be faster at that point in time, unless the Cuda was just toying with it.
Then again whos to say the Mustang wasn't parked up whe this attack happend............?
In the wild thats not the case, have caught many down here. Their fast but most fish rely on speed to catch prey others ambush.