Barometric pressure????

[Wags]

I read somewhere that the barometric pressure has an effect on the aggressiveness of fish. I have NO IDEA what the hell that even means. I noticed that a low pressure front was moving towards Michigan this weekend and the bass were unusally agressive at a local tournament, attacking top-water like they hadn't eaten in months. That is what I was lead to believe would occur if the pressure was low. I guess the question would be, is there a particular number for the Barometric pressure to be considered high? or low? I've heard weather people read the barometric pressure number and then say that it is steady (neither rising or dropping). I know this sounds like I'm grasping at straws for a bit of an edge,......but I'm grasping at straws for a bit of an edge !!! Any help in understanding all this would be greatfully appreciated since I probably slept thru this info when I was in science class many moons ago.