Beef with most field guides.

I was wondering if anyone else had this problem or can offer a solution.

It kinda ticks me off how most of the north american fish field guides only show the species native range. I mean I understand its importance and i respect that, but that dosent help me in a real world situation. I mean im not fully supportive of the fact that fish get moved and take over, i think it kills out some of the original native species, but then again the invading fish species do end up succesfully inhabiting the waters they are introduced in and therefore i think it is important to represent that. To do otherwise kind of seems like the old moral about ignoring the elephant in the dining room ya know? For one example... I spent hours trying to figure out what kind of sunfish I had and was thinking i was crazy or found some subspecies/hybrid until i finally found out it was a green sunfish after checking the ones outside of my range.

Does anyone know of any books that show either present range or both original and present range of species?

I'm not sure of any field guides that will cover NAS species well...... but this database does:
http://nas.er.usgs.gov/

This is an invaluable resource to all that collect Native fishes.

Example of how it is usefull can be found here (Using green sunfish as an example):
http://nas.er.usgs.g...p?speciesID=380

Click on the distribution map itself and you can then access specific locality data using a variety of options to pin point specific introduced populations.

This is a very detailed database of introduced species