Saw a cool photo today 

 What is the reason for such diversity ? 

The brightest areas are kind of at the southern end of the native range of many northern fish species and the northern end of the native range of many southern species. So my answer would be an overlap of habitats

 

the west is too dry 

Threadfin are the primary baitfish in the Mid South.  They don't like water temperatures

below 45*.

Pay no attention to this people. It's really a map showing the density of the black drum species. 😉

 

@roadwarrior & @TnRiver46 I guess people are going to find out about our secret. We won't have the river to ourselves anymore...oh wait. 🤣

No doubt some of the greatest drum habitat in existence 😂 

18 minutes ago, Way north bass guy said:

You beat me to it by 17 minutes...by the beard of Zeus!

Perfect! I couldn’t find it 😂 

 

Ron, I’d be surprised if the network was concerned with the lack of a wooden ship 

When I first saw this map, I thought it was showing the effectiveness of spinnerbaits in different states.  I do believe both would maps would be almost identical.