Why do more fish bite in the morning and the evening?

I’ve always wondered why I catch more fish in the morning and the evening. Conveniently, one day without having to do any research on my part (thank goodness), the answer came to me in the strangest way.

image of sun setting over water

I’ve always wondered why I catch more fish in the morning and the evening.  Conveniently, one day without having to do any research on my part (thank goodness), the answer came to me in the strangest way. 

After a day of fishing I was drinking beer in my good buddies’ kitchen, talking about this very phenomenon, when his girlfriend (whose also a Neuroscientist) heard us talking, and laid a verbal smack down of knowledge on us:

“Fish are matutinal, they see best during the Crepuscular Period.”  She said, to dumb faces – or at least I think what she said was semi close to that (I also was pretty drunk when this conversation took place.)

I digress; I’m sure you can imagine how dumb we looked and felt.  I still don’t know what some of those words mean and I’m writing a blog about it, jeez!  As dumb as we felt, we we’re both very interested, afterall this could lead to us catching more fish.  She reiterated and said that Fish eyes allow them to see best when the sun is cresting, aka during twilight, dawn / dusk or the crepuscular period (say it with me “cre-pus-cu-lar”). 

What this means is that Fish aren’t necessarily hungrier during breakfast and dinner like my dad used to say when I was a kid, but they can see prey when the light of the sun is cresting the earth’s atmosphere.

Which brings us to our next question… why can fish see better when the sun is cresting the atmosphere?

I know by now, you have all come to rely on me as a scientific source for fishing information, and not-at-all as the guy reposting fishing girls in bikinis, so let me break it down for you. 

Twilight is the point of day when the suns rays enter the earth atmosphere from an angle equal to or below the horizon line, just before the light is completely gone for the night.  This causes the light particles to hit the atmosphere through the thinner, upper levels and become majorly polarized before reaching the water. The thinner air of the upper atmosphere reflects the light differently and gives the glow that we know as twilight or “Rayleigh’s Scattered Light.” (first discovered by Lord Rayleigh in 1889.)  …One day I hope to become a lord myself, for my contributions to fishing… For a better understanding of Twilight and how it works click here. For more information on Twilight the movie you’ll have to go elsewhere, try google or something. 

So what makes fish bite at twilight? 

Hold on to your nerd glasses, I’m about to get Scientific AF…  One of the interesting things that happens to these “scattered light particles,” is that they become about 67% polarized at right angles. This polarized light result in shorter wavelengths, which is the range that green to blue light and ultraviolet light exist in. Pretty big coincidence that these are the wavelengths that the more simple fish eyes can see better, huh?  As well, fish can see in the ultraviolet light range so it seems that they can suddenly see way better under the water when it starts getting dark for us above water and we can’t even find the bottle opener anymore.

I’m sure you’re probably not going to do anything different with this information, but I thought you would think it’s kind of cool to hear the scientific explanation for something that you already know, fish bite more at dawn and dusk.  I know I was, but after writing all that I feel like I need to post a girl in a bikini just to redeem myself.

Here’s a picture of Cami Cakes fishing in a Bikini. Please forgive me.

Now get out there and go catch some fish. If you liked this post, take your bikini clad girlfriend fishing and send us a picture.

For even more further reading of this phenomenon click here.

For more pictures of girls fishing in bikini’s click here.

Bikini Baits.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.